Well it's had two offers yet there's another on Ebay UK with a buy it now for £1,195 and not sold. Here:
http://www.ebay.co.uk/itm/Watkins-Dominator-Vintage-/350549197693?pt=UK_MusicalInstr_Amplifiers_RL&hash=item519e5c437d
I guess my point is that there's a hell of a lot of valve amps out there, this is very old, low powered (17watts), are they really worth that much money? maybe they are then?