probably a dumb question but if I was starting with no parts, besides the cost of the hull what should I expect to pay for all parts needed to build an am ski? Just wanting to start with a basic 701 setup I think. Thanks for the help
We can say the obvious of a motor, pump, etc, but that's not what is going to kill you. Things like motor are obvious. What's going to kill you is all the little things like bolts to hold the bed plate to the motor mounts, shims, not all hulls come with the little stainless clips that hold the fuel tank / waterbox straps to the hull mounts. Precisely what you need is going to depend on what you choose. Some hulls come with pole brackets installed. If you buy one that doesn't then you will need a pole bracket but also the bolts to hold that bracket on. Sure, a few bolts doesn't seem like much, but when you have to order a few hundred in various shapes and sizes, it's going to get overwhelming. If you want the nice OEM hardware with washers and lock washers built in that costs more than your typical bolts.
No, I haven't built an AM hull so I don't know the exact cost but I have considered what it would take. I parted out a few skis past and have a fair collection of hardware on hand decently organized. When I get a ski I want to put back together and have to dig through all that hardware looking for matching sets of specifics it's a very daunting task. People buying donor skis is not just a cost saving measure. It makes for a very good starting point so you have a lot less to try to piece together.
This Krash Starter Kit thread will help you get a pretty good idea.
http://x-h2o.com/index.php?threads/krash-industries-starter-kits.174052/
The list of items included are pretty extensive at each stage. If you buy a hull without those items included, you will also need to purchase hardware and shims to mount it all. You don't just say, "I need 10 feet of cooling line." You say, "I need 10 feet of cooling line, 2 tees, a flush kit, 15 hose clamps, a flow control valve, 3 pissers..."