>Obviously I didn't ask for Amiga-only stores, but just for some hints about shops that could be still involved in the Amiga market in some way ...
You can visit Krishna Software Inc. if you want and pick up a simulation cable for your Amiga and save a bunch on shipping and handling. I'm about 20 miles from Holland Tunnel (which connects Manhattan to NJ).
I also have some other Amiga/Commodore stuff which I can barter for other amiga stuff. I'm looking for working A600 Motherboard (European or American).
In regards to simulation software, I'm assuming you also use a PC as I doubt Macs can emulate the PC ports in real-time.