I don't post very often but saw this post and had to chime in.
I live nearby the Pinball Dudes and have had dealings with them. They have been very fair to me every time.
The shop isn't as much of a mess as is claimed. I've been to far worse places. They are just short of space so it might appear messy. The working games are all neatly lined up so this isn't really an issue if you are there to buy. All their games are available to try out for the public for as long as you like with no charge.