I bought the motor from bartyspares in May 2011, it looked new and arrived promptly.
With the help of youtube I tried to change the motor in my Dyson DC14 Allergy, it was quite a feat but I managed it eventually. Unfortunately, for whatever reason the hoover did not turn on. I took it to my local repair shop and they fit it in for me. The man was not sure why it did not work but said one possibility was that I had used vaseline to lubricate the motor to ease it back into its casing. I had seen the suggestion in one of the videos I watched (as well as the one about washing-up liquid) so I thought it would be OK to do that. Anyway, as for the motor itself, it is still working after 3 months.