Not quite a "snip" at £40, but it's a heavyweight entrant:
Plessey 6744:
http://www.britishtelephones.com/t6744.htm
I already have one of these (dial version) with a bent backplate, so a bit difficult to mount:
http://www.britishtelephones.com/t745.htm
Well I thought is was one of those, but now I found out its one these, without the handle on the door -
http://www.britishtelephones.com/ericsson/n1240.htm
The 6744 is my 4th DTMF capable phone, everything else is pulse!