Not sure who's going to be reading this and if everyone will be familiar with french, so I'm using english right now...
One problem I foresee with this B2G1 plan is that as far as I know, Predaking ships 2 to a case. If one store only gets 1 case, it might be tough finding 3 of them at the same time. Not to mention before the B2G1 coupon expires.
As well, is everyone interested in doing this from Qc city? I myself live about an hour outside of Qc but can drive no problem provided I have the time to go. Shouldn't be a big problem