Well I wouldn't, plus what if I want to deposit a stack of something? Do I have to put each item one by one into the door just to get money? I'd rather make a 2 second trip to somewhere to get rid of junk instead of having to put in an item and go through the process of getting 2r, or what you pay. I would always go to the place that is the simplist to deal with
Mmk.. I think you should make it optional. Like if you use the sign you can spend your time claiming your few rupees, but if you don't care you can just drop it off and go?