I hate to be 'that guy', but I wonder if you may being a little optimistic on price. I watched one of these not sell on Ebay for £850 a few months ago.
Clearly they're fine amps - but I wonder if people are struggling to comprehend paying around £1K on a single EL84 amp? For that money, you're in competition with top-end Cornell, Cornford and pretty much all the big US boutique manufacturers.
That said, I hope I'm wrong so good luck with the sale!