Peter, in your price range you want to look for the LP12 with Valhalla. You can tell this by looking at the Power on/off switch at the front left of the TT. The older non-Valhalla models had a large red square pushbutton. The Valhalla changed that to a low profile black square button with a small red LED in it. That is the easy way to identify pre-Valhalla, and post-Valhalla. Virtually all Valhalla models were also upgraded with the Nirvana suspension kit, by the owners, and all Valhalla factory models had the Nirvana suspension kit in them. You don't have to worry about the Cirkus, and Lingo, and other such Linn stuff in your price range. I think the Valhalla is the ideal setup for the least money. All the other mods are somewhat controversial as to their effect.
The Basik and Basik plus tonearms are variations of the early lower cost Linn tonearms. I think the Basik had an "S" shaped chrome arm and a removeable headshell, and the Basik Plus had a black straight arm. They are well suited to medium weight and medium compliance
cartridges. A Goldring cartridge that fits your budget would do nicely.
Getting a Linn shipped to you is a complex matter. It must be disassembled and packed properly. Failure to know how to do this will result in damage. In any case the TT will have to be completely set up, as all settings will be lost from the disassembly or transit shaking. If you get one, you will need to post it, and ask for setup instructions. I will come to your rescue. I've done this for other members who have bought 2nd hand Linns by mail order shipping. If possible, buy one you can pick up in your car, and take home with you.