Hi Gerard!
You can pick up a used Super Jolly grinder on UK ebay from between GBP150 and GBP200. There are at least a few up for sale every week at the moment.
The cheapest place for a UK grinder is Coffeehit.co.uk where you will also get good advice and good back-up. Paul who runs it is experienced, bullshit-free and won't try and make you spend more than you need to - quite the reverse in fact. He also sells and likes the little Mahlkonig Vario. There is even a review of it on his blog site. For a while they weren't in stock in the UK, but I believe a new consignment has now come in. If you look at the relevant page on the Coffehit site, you will see they are expected to come in around the 25th or something of this month:
http://www.coffeehit.co.uk/PRD_ProductDetail.aspx?cid=82&prodid=580&Product=Mahlkonig-Vario-Coffee-and-Espresso-GrinderThe alternative would be to get a really good hand grinder (such as the Prolex from Coffeehit or a beautiful reconditioned one from Orphan Espresso
http://www.orphanespresso.com/ in the States), which will give you comparable quality in the cup to most grinders up to and including the Vario/Super Jolly but for much less money - and if you ever do decide to upgrade, one of these little gems will make for a very handy (pun intended) 2nd grinder, including for travelling. They are great way of saving money in the short term without wasting it in the long term.
Cheers
Mike
LMWDP No. 237