WOW, how was the sale price of that adaptor!!!! Build your own it's cheaper. That adaptor is probably just an APPE home built and sold on ebay. I have built mine for less than $10 AUS. Compared to that ebay one which is about equivalent to $60 AUS. You do need a PIC programmer though (or know someone who can do it for you)
I have got mine working now(APPE adaptor), sort of at least. What I really want to do is make it work with the lovely new wireless controllers I just brought for it. It works (sort of) with an ordinary wired Pad, but not with the wireless pads. For some reason, it (the adaptor) is stopping the controllers from connecting to the receivers. More fun to be had before I get anywhere with this. :-( :-(