Some I sold as is, others I put in $1500-$2000 (labor and materials) and let my handyman do all the work and ended up with a completely remodeled MH in less then two weeks.

Have you used his material or taken his courses?

You can also refer people to Marcus and Millichap materials.

The original customer has already paid for the material, so I will often get small (6-8 x 10) pieces for free ... or maybe $20.

It seems like tile, more than any other material can easily be poorly installed, either by a DIY or even by seasoned contractors who don't know the proper substrates, etc for tile installs.

Assuming the new fits the old frames, you can just recycle the new frames, or replace them as needed.We do the same with windows when both panes have been broken.It is not always the most economical when looking just at materials costs, but when factoring in time and difficulty - it is the easiest and fastest.

You don't want them picking out your materials for you

The buildings are solid metal construction with minimal differed maintenance to correct.

Check your state and local laws, but you for sure must disclose you are an agent if talking to a consumer about buying or selling a house.The yellow letters may need to have your agent and broker info on it as well, it would have to be on the marketing material in my state.

Ok what I was trying to say those profarma are marketing materials it does not mean  every deal will go like that.and also compare with any REIT whether it is worth getting in to hastle.