All common sense you have to determine what scrap is. If it is not scrap it is sale able. Other things you can get more for in scrap than resale. Also have to look at time and cash flow alot of scrappers don't have the time or ability to repair stuff safely for resale so you have to look at liability as well. If you sell that mower and a blade flies off you may be liable for that make sure you get a bill of sale that says as is. I don't sell riding mowers I put them in the yard even if they run because I am so busy I don't have time to fix them. But cudo's to you for making all the money you can now just get a pile of cat's together and give me a call.