I just emailed my cousin (he's currently busy with quite a few customers from what he said on the phone) so hopefully i'll get an answer sometime soon XD
But what do you mean about the BB pre-order? as in if you got it online you could just return the gift card? Sadly, i wouldn't be able to do such a thing, cause it says right on the receipt "non refundable" so i'm stuck with the 50 dollar gift card even if i dont get the phone >.> which, if i had an addition 100 bucks it wouldn't be that big of a deal, cause i could buy quite a few other things with that card XD but since i dont have an extra 100 dollars just laying around (literally sold quite alot of precious items on ebay just to get 183 dollars, and i still dont have the full total yet >.>) i can't just go online and buy it again.. but, i could simply do like you said, and sell the spot to someone.. except that radio shack has my name, account number, phone number, and all that jazz on the receipt.. so i'm assuming they just scan the lovely bar code or whatever on the receipt, and it sends some sorta signal to sprint saying that my phone is allowed on the network and and auto links to the account or something (then again, i'm just saying some random crap just for the sake of it XD).
but in any case, i dont think selling my "spot" with the pre-order would work thanks to my personal information being on the required receipt for pick up >.>;;
as for profiting from the community, idk XD id say if they were to just pay for 50 bucks that you already paid to the place, then its the same as them doing the preorder >.>; but as i said, i know mine has all my personal crap on it, and idk about best buy..