"in other words they want me to hand them a list starting with 8x10 on up..."

Awesome! This is good news for you - way to go!

Pricing can go all over the place - numerous "older" established studios will charge you over $100 for a freakin 5x7, and I think they're on the decllne in this economy.

Okay, you want a base start? Go to every minilab that has a studio and get their portrait listings. Go to Sears, the little family studios in the mall, etc. All you gotta do is ask. Get all their lists - make a whole day out of it, going from place to place. THIS is your competition so price accordingly.

However, given the postwork, the fact that you're not just setting up 2 lights with umbrellas without a care as to what they're hitting, you can probably charge a bit more given that your stuff is going to be a tad more "custom" than the others.

As far as packages, figure out what it would cost based on buying them individually, and lower it by something like 10% given that they're buying bulk. You wouldn't have HAD the bulk order if it was just going to cost them individual pricing, so make it worth it if they do the math.

Hope this helps-
-Lew