Ahh, that brings back memories! I bought the '020 version of that accelerator for my A500 back in 1995 for $100 from Software Hut. Nothing like finally being able to run that 020+ software and being able to play Gloom in ECS mode :-D Great little card for the money.
Course, it did force me to ditch my A590 for a Trumpcard AT, but that turned out to be a lot faster and let me use a cheap, huge, 170 meg IDE drive!