It seems /extremely/ unlikely that such a low number of Iyonix computers have been sold. I visited their Framlingham offices a year or two ago to part-exchange a stack of second-hand RiscPCs for an Iyonix, and they had at least 40 machines in the process of being tested and shipped out. They only have to keep that up for two weeks to shift over 500 units!
And in reply to Tony Still: I don't remember any such negative feeling when the Iyonix was first announced. I seem to recall that we were all delighted that a computer would actually /appear/, as at the time we were still waiting for the mythical Omega.
Anyway ... to sum up: I love my Iyonix, and I recommend them to any RISC OS fanatic.