Hand this out to everyone working your tag sale so you're all on the same page regarding starting prices (and so everyone knows how low he can go when it comes to hagglers). Check off items as they're sold to see what kind of progress you're making, and use the far-right column to document the final-selling price.

Next Steps

The Ultimate Tag Sale Guide. Everything must go! What you need to know to throw a successful yard sale.
Tag-Sale Price Guide. Lists of popular tag-sale items and suggested starting prices.
Spreading the Word About a Tag Sale. How to attract buyers to your sale.