Definitely a nice gesture. I always like having a paper manual when possible. When not possible, the first place I look is hifiengine or vinylengine. Need to do the free signup. They've got a fairly good collection of owner's manuals and service manuals.
I, for one, do not care for people charging cash for old manuals. Especially the eBay PDF'ers who sell the same manual over and over. If I hit the lottery that I don't play I'd buy em all and set them free!