It depends and what are they're looking for? Do they want to rebuild it, part it out or scrap it? Do they need a VIN tag, a frame, the engine? If they scrap it, they can't do that at Copart site and scrap yards generally have a maximum size requirement. Anyway, burnt out RVs probably still have too much fluff to be accepted as a whole item. At my neck of the woods, most scrapped transit buses go to the same yard, because the other yards don't have a long enough press and won't cut them in two smaller pieces. On the other hand, I've seen videos where the yard use a shear to cut them into pieces. The ferrous yard I make business used to receive semis, but since they're been taken over by a corporate giant, the press is gone, I see seldom cabs (no truck frame) and they press cars using a block of steel to flat/crush them before loading them in trailers mixed with shred. In other words, if you plan to bid on burnt out rvs, I think that it is safe bet to expect having to move them at your location and prepare them before sending them to a yard.