An example of FD one way lines robbing the user Since FD doesn't offer an under, they aren't forced to be competitive on this price. The theoretical vig can be anywhere from 5% to 50% (50% vig on -230 gets us a +141 fair value) Fanduel knows most don't line shop, they hope you don't. If you throw this into a parlay with a +100 leg, your parlay would be +187 on FD and +388 on DK Don't get robbed blind, invest in an odds screen