I have some B-Stock Hypex parts. Several amplifiers that have been repaired for one reason or another. They all work 100% and have been repaired by the Hypex service department.
UcD180ST $75
UcD400AD $100 (needs external +/- 12V)
I also have about a dozen Version 1.0 UcD180HGs. These don't work with the new HxR regulators but are fine otherwise. $125 each.