The 500 is a great machine, most of us probably began with it. But, if money is no problem (and especially if it is), it may not be the best place to start today. Accelerators are becoming scarce and the graphics are un-expandable.
Amigakit is still selling new and refurbed A1200s, which has better graphics and CPU. Accelerators are getting scarce for it, too though.
3000s and 4000s become available from time to time and they came with 030s as minimum. Probably, the same cost as the GVP A530 and they are better machines as well. You can spend a lot of money tricking out an A500 and still find youself painted into a corner concerning graphics, networking, and general expansion.
OTOH, maybe the 500 is what fires your imagination. Grin.
Final thought: GVP memory is proprietary to them and very hard to find also. Some avoid GVP accelerators entirely.