I had been using Lipo 6. I ended up at Walmart somehow and wanted to check out what type of supplements they had as I didn't even know that they carried some major brands. I was browsing through and came across a couple of carts with all sorts of fat burners in them. All of the following were 5 bucks a bottle as they were getting rid of some brands they no longer will carry so it might be the same at Walmart's around the country:
Redline (60), Hot Rox (72), Xenadrine Super Hardcore (36), Xenadrine 8 hour Energy (60). They only had 4 Hot Rox and 9 Redline's left so I grabbed them all ;) Expirations vary from late 2008 to 2010. I also bought 5-6 bottles of the other ones as well just to try them out sometime. They had 4-5 other brands too that I really didn't care for so I didn't touch those..
I'm getting shoulder surgery at the end of the month so I'll be using some fat burners until I can get back to weights and then for probably a few months more :(
It might be worth checking to see whether they might have anything on clearance..