WTB: ThinkPad 600 battery

[AlphaKilo470]

I'm looking for a battery to use in my ThinkPad 600. I'm hoping to find one here because I really would prefer not to shell out $40 or $50 for something that has an average lifespan of less than a year or just over.

If anyone has a battery that holds a decent charge (1hr+) and are willing to give it up for a decent price or trade, please let me know, thanks.