Many years ago I had my eye on getting an Akai ME35T (Trigger to MIDI converter), however at the time they seemed quite sought after and hence a bit on the pricey side.
Fast forward to late 2016 and I saw one on eBay listed as spares-or-repairs — the current owner didn’t have the ability to test it beyond plugging it in and stating that the LEDs were working. Cosmetically, it was a little lacking (missing one button, various scratches and scrapes, loose glass, and a bent rack ear). Anyway, the price was right so I bought it!