I've really no idea, and I'm not immediately in the market for this kind of thing, but are these 2 x turntables from eBay, or similar offerings, any good?
http://www.ebay.co.uk/itm/2-X-Techni...ht_1997wt_1118
Perhaps I shall start watching this kind of auction. They often seem to go in pairs, presumably having been used by DJs.