Just bought a 16" one as a standby, the postage is free despite detailling parcelforce prices:

Link

I bought one from that seller last year to use as an addition auxilary fan not controlled by the engine ECU --- no problems.

Thats good to hear, quality was the only concern, but for £22 I thought I'd risk it.

Probably better than the 43 year old one on my Jaguar.