There is a MXR 185 drum machine on Ebay right now (link). It’s an EPROM based machine like the Oberheim DX. Hollow Son sampled it for their Nostalgia Kontakt product. Whenever I think I’m sure I have seen every drum machine ever made another one appears. I’m not sure the 185 is worth $900 but it does look nice.
“I have no idea why the product wasn’t successful but the MXR 185 pretty much disappeared without trace almost as soon as it was released.” – hollowsun.com
For more info: hollowsun.com/vintage/mxr185