That's the thing with cutting-edge technology, five years down the line it's just a box with flashy lights that no one wants because there's a new box with more flashy lights.
My best non-ebay bargain was an ancient Sound City 120 Watt valve head with six EL34's, rusty knackered old Partridge transformers, £60. I think my brother has it now, that was the first amp I dared do repairs on myself. It was noisy and buzzy as hell but the amount of clean power from it was astounding. I sometimes think a pair of those things with new tubes and filter caps would be an astounding power amp setup for the rack system but I'd need an army of roadies to shift them. And let's face it, the average small venue doesn't take kindly to having its customers deafened.