I have an old Becker analytical balance I picked up off of eBay for $50. Precision down to .0001 grams
Did it work out well? I've bought a fair amount of lab and test equipment on eBay over the years, but analytical balances seem so fragile and finicky that I'd be terrified to buy one second-hand. I'd love to be able to do a little rudimentary quantitative work, though...