Well, on Ebay, the Marshall JVM410H regularly goes for around the £600 mark and on Ebay at the moment I can see a Peavey 6505 for the same price. There's also an Engle Ritchie Blackmore model there for £850 and few Blackstar Series one amps for a similar price. If you want to push the boat out more I can see a Mesa Boogie Triple Rectifier available for £1,450. Yesterday I saw an Engle Screamer go for just £350.
If you want to look at new amps, the Blackstar HT Stage 100 is £600; the Jet City JCA100H is a very similar price, a Bugera 333XL is just £429 and Laney are launching the new Ironheart amps in the summer to replace the old TT range and they should be very reasonably priced.
I'd say that all of these are really good amps and don't break the bank. As for a cabinet, I bought my Marshall 1960A 4X12 in excellent condition for just £200.
