i had to write a baseball parlay calculator for a local guy and he was talking about how he had to deal 10cent lines on baseball - eg -130/+120. said his palyers pitch a bitch if he goes to something like -135/+120 or -140/+120. however, he has no problem at all posting -110/-110 on what he calls a pickem game. too weird. anyway the local guys (everywhere i've been) as opposed to offshore books have a street payout on parlays. 6 pays 14 rather than 5 paying 13 (2.6/1) moreover, a 3 team parlay pays 5-1, a 4 team 10-1, and a 5 team 20-1. of course those are all at -110.
many locals - including my client - cannot afford to pay sportsbook odds due to lack of volume (and their desire to maximize profit) but they don't know how to calculate lines other than -110, say a 3 teamer with lines of -165/+120/-220. there are plently of parlay calculators on the web (and here) that use casino odds but i wrote one for the local that follows the 6 pays 14 logic. you can visit it at http://parlaysrus.com/calculator.htm if you want to check it out. of course it is free with no gimmicks. also i am attaching a sample of nba line tracking data incremented at 2-3 minute intervals. i discard it but if anyone is interested in using for developing/testing a model, i will be glad to provide it at no cost. i can collect the data 24/7 and cann even reformat it, convert to american or whatever. i also have same for MLB. -- uplaod manager just endlessly pinwheels even tho file is tiny. this is what data looks like:

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4-18-2012-10-07-11-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.943,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.962,
==================================>
4-18-2012-10-09-43-PM-last.txt
WED 4/18,721,OKLAHOMA CITY THUNDER ,-4,1.917,1.599,OVER 209,1.952,
07:05 PM,722,PHOENIX SUNS,+4,1.990,2.510,UNDER 209,1.952,
WED 4/18,723,SAN ANTONIO SPURS,-5,2.000,1.526,OVER 216,1.971,
07:05 PM,724,SACRAMENTO KINGS,+5,1.909,2.710,UNDER 216,1.935,
WED 4/18,725,UTAH JAZZ,-5,1.909,1.488,OVER 198.5,1.962,
07:05 PM,726,PORTLAND TRAIL BLAZERS,+5,2.000,2.840,UNDER 198.5,1.943,
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.943,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.962,
==================================>
4-18-2012-10-12-53-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.943,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.962,
==================================>
4-18-2012-10-15-16-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.943,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.962,
==================================>
4-18-2012-10-17-39-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
==================================>
4-18-2012-10-20-39-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
==================================>
4-18-2012-10-22-52-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
==================================>
4-18-2012-10-25-47-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
==================================>
4-18-2012-10-28-12-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
==================================>
4-18-2012-10-30-24-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
THU 4/19,501,MILWAUKEE BUCKS,+5,1.935,OVER 205,1.952,
04:05 PM,502,INDIANA PACERS,-5,1.971,UNDER 205,1.952,
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-32-43-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
THU 4/19,501,MILWAUKEE BUCKS,+5,1.935,OVER 205,1.952,
04:05 PM,502,INDIANA PACERS,-5,1.971,UNDER 205,1.952,
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-35-16-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.909,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,2.000,3.440,UNDER 203.5,1.935,
THU 4/19,501,MILWAUKEE BUCKS,+5,1.935,OVER 205,1.952,
04:05 PM,502,INDIANA PACERS,-5,1.971,UNDER 205,1.952,
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-38-26-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.926,1.364,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.980,3.440,UNDER 203.5,1.935,
THU 4/19,501,MILWAUKEE BUCKS,+5,1.935,OVER 205,1.952,
04:05 PM,502,INDIANA PACERS,-5,1.971,UNDER 205,1.952,
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-41-46-PM-last.txt
WED 4/18,727,LOS ANGELES LAKERS,-7,1.943,1.370,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+7,1.962,3.390,UNDER 203.5,1.935,
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-44-36-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-47-36-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-50-15-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-52-47-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-55-09-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-57-19-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-10-59-31-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-11-02-30-PM-last.txt
THU 4/19,503,MINNESOTA TIMBERWOLVES,+5.5,1.917,OVER 196,1.952,
04:35 PM,504,DETROIT PISTONS,-5.5,1.990,UNDER 196,1.952,
==================================>
4-18-2012-7-08-59-PM-last.txt
WED 4/18,701,CHICAGO BULLS,-13,2.000,1.063,OVER 179,1.962,
04:05 PM,702,CHARLOTTE BOBCATS,+13,1.909,11.750,UNDER 179,1.943,
WED 4/18,703,MILWAUKEE BUCKS,-8,2.030,1.292,OVER 206,2.000,
04:05 PM,704,WASHINGTON WIZARDS,+8,1.877,4.000,UNDER 206,1.909,
WED 4/18,705,PHILADELPHIA 76ERS,-9,1.980,1.222,OVER 185,2.000,
04:05 PM,706,CLEVELAND CAVALIERS,+9,1.926,4.850,UNDER 185,1.909,
WED 4/18,707,DETROIT PISTONS,+9,1.990,4.770,OVER 190.5,1.935,
04:35 PM,708,ATLANTA HAWKS,-9,1.917,1.227,UNDER 190.5,1.971,
WED 4/18,709,NEW YORK KNICKS,-8,1.971,1.256,OVER 193.5,1.980,
04:35 PM,710,NEW JERSEY NETS,+8,1.935,4.380,UNDER 193.5,1.926,
WED 4/18,711,TORONTO RAPTORS,+9.5,1.980,5.980,OVER 187.5,1.943,
04:35 PM,712,MIAMI HEAT,-9.5,1.926,1.167,UNDER 187.5,1.962,
WED 4/18,713,NEW ORLEANS HORNETS,+9.5,1.952,5.500,OVER 179.5,1.952,
05:05 PM,714,MEMPHIS GRIZZLIES,-9.5,1.952,1.187,UNDER 179.5,1.952,
WED 4/18,715,ORLANDO MAGIC,+5,1.885,2.730,OVER 178,1.926,
05:05 PM,716,BOSTON CELTICS,-5,2.020,1.518,UNDER 178,1.980,
WED 4/18,717,HOUSTON ROCKETS,+4.5,1.952,2.660,OVER 191,1.952,
05:35 PM,718,DALLAS MAVERICKS,-4.5,1.952,1.541,UNDER 191,1.952,
WED 4/18,719,LOS ANGELES CLIPPERS,+3,1.971,2.340,OVER 201.5,1.935,
06:05 PM,720,DENVER NUGGETS,-3,1.935,1.676,UNDER 201.5,1.971,
WED 4/18,721,OKLAHOMA CITY THUNDER ,-3.5,1.990,1.667,OVER 208,1.943,
07:05 PM,722,PHOENIX SUNS,+3.5,1.917,2.360,UNDER 208,1.962,
WED 4/18,723,SAN ANTONIO SPURS,-4,1.862,1.541,OVER 214.5,1.926,
07:05 PM,724,SACRAMENTO KINGS,+4,2.050,2.660,UNDER 214.5,1.980,
WED 4/18,725,UTAH JAZZ,-4.5,1.952,1.556,OVER 198.5,1.980,
07:05 PM,726,PORTLAND TRAIL BLAZERS,+4.5,1.952,2.620,UNDER 198.5,1.926,
WED 4/18,727,LOS ANGELES LAKERS,-6.5,1.980,1.385,OVER 203.5,1.971,
07:35 PM,728,GOLDEN STATE WARRIORS,+6.5,1.926,3.310,UNDER 203.5,1.935,
==================================>