I have been thinking about cornies too..
H&G have them for £34 I think, which is a good price, not sure if they need new gaskets. Have you seen the price of cornies in the US?...£12 each..God we get ripped off..
There is also homebrewwlaes, which looking at their website is also a bar/brewery supplies place (of sorts). They might have some really knocked about ones as a result. Just a (stupid!) thought.
One recently went on ebay (used) for £46 + £10 p&P which i thought was a stupid amount of money.
Thought i might actually be able to by a corny from a retailer ..use it...flog it on ebay and make some money!!!
JC