Amiga PC keyboard adapter

[Lurch]

So have been hunting for an adapter for my A500 so I can use a PC keyboard and came across

http://www.rotgradpsi.de/mc/gadget/amiga.html

States it works with any Amiga, is there anyone out there making these or have something similar?

There are plenty of options for the A1200 but nothing for the A500 which I find strange.

Willing to pay someone for an adapter if it comes to that :-)