Yes they have to keep all winning tickets to get compensated .I just explained this scratch off business the vendor pays the store to put that product inn the store when the roll of scratchers is depleted they call the vendor for another roll.Lets say you have a 5000 ticket roll only 100 tickets are winners 50 $1 dollar winners and 50 $10 winners for a grand total of $510 that leaves 4490 worth of losing tickets sold. The vendor gives the store its cut of losing tickets sold similar to the state lottery giving the cut of losing tickets sold to the education funds.Ok the vendor gives them a check for $550 + whatever % of losing ticket sales they agreed on.Vendor replenishes the roll of scratchers and takes the old scratchers for accounting purposes.