The bike shop should help you out alot, but I could eliminate all of that and offer you a (New) bike for a cheap price. I rode it once on sunday, and figured out that I am not a hardtail person. Its a specialized stumpjumper comp, fox fork, xtr rear derailleur (top of the line) lx front derailleur (middle of the line) specialized parts include cranks, seatpost, stem, tires, front hub, grips, and seat. LX shifters, Mavic 221 rims, and Avid Avid SD-5R V brakes. I will sell it for $850. This bike retails for around $1500, depending on where you buy it from, and I would consider it being just under top of the line, at an average lower end bike cost. And I live in michigan.
What brand bikes does the shop your going to sell? We could help you out with the models and stuff.