I bought mine when they first came out (manufactured) from ACube and it is still going strong.
Here is some important advice: BUY THE 4MB MODEL.
The extra RAM comes in very handy, especially if you want to run WHDLoad game packs from Workbench. If you just want to run basic floppy disk games though then the basic board will be OK.
However, unless you have spare cash, you might want to wait a little longer and get a FPGA Arcade instead which has more RAM, a better (emulated) CPU, faster speeds and... AGA!
The Minimig from Amigakit is going to be a little cheaper though:
$177 (basic board)
$227 (with extra RAM)
The FPGA Aracde will be around EUR200 or $290 minimum when produced in bulk.
Both will need power supplies, SD Card, mouse, keyboard and don't forget to add shipping costs.