PDA batteries

Hi all.  Just got a new battery for my Dell Axim. Prices have gone up in the last while. Probably they are getting scarce ?
Anyhow Its a lot of junk (does not work at all). I got stuffed by the seller (a crowd in Milton Keynes called  p2t-uk ). Its manufactured by Cameron Sino. I have had them before and this is the second dud I got so beware of them I say.
Any suggestions for a reliable source welcome.

Good news . I now have batteries  from (battery_pro) in Lancashire. They appear to be newly made ? Anyhow they are good and hold a charge . ?20.88 for two.