The only building materials that are out sight right now are lumber and copper. 

As I said in another thread, if you want to bypass some of the high cost of lumber etc right now, jump to steel or CMU.... 

It's probably not going down. dimensional lumber doubled and sheeting went up 10X in some instances. 

Why are they being unloaded?

I do not believe Chelsea made a super duper killing, but she came out ahead and we all learned enough so that net profits in the future should be larger now that we know our limitations/parameters/etc of staying in "soft money" world with these deals, combined with what Shari's transactional end-lender's expect.The theoretical framework here is that if wholesalers can expand their marketing to include end-buyer owner occupants using Fannie/Freddie financing, that vastly wider pool of potential buyers should let them unload the property for much closer to full retail than if they can only sell to folks using hard money or all cash that aren't going to live there.

You don't need to buy 2x4 lumber and drywall, but you do need to pick out and buy light fixtures, bathroom fixtures, flooring, etc.

This is Eider White with my favorite flooring, Country Bluff Oak EVP from Lumber Liquidators (picture quality sucks):I do have two houses with yellow exteriors that I used Wool Skein (a light greige by Sherwin WIlliams) in, with Shaw LVP from Lowe's in Resort Teak. 

Have quotes for demo / remove, over $10k.My question: it seems to me there is salvageable value in some of the lumber, metal roofing, even the old MH.

One of the guys who started lumber liquidators started the company (I heard). a 10x10 can cost you under $2k. 

But ya, I paid for the lumber and labor on a daily basis and will have to keep paying him to redo I suppose or he may walk.