What is the best guide to use for small size notes?
I like to use the Greensheet for pricing. You can purchase a copy on eBay. Good luck !!!
There are no "good" price guides for small size notes. The Small Size guidebook is long out of print, and even those prices may have been high or low at the time and may not reflect current pricing. Greensheet isn't really worth the paper it is printed on, except to try to buy scarcer varieties and types at potentially discount prices.
Heritage Auction Archives will give you perhaps a better idea of the current market. But, scarce or rarely auctioned items may bring more (sometimes considerably more) or even less. The market for small size is fickle. But, generally, scarce types or varieties, many early stars, and top pop notes can bring strong money. More readily available notes, in less than top pop have been somewhat weak of recent.
For good retail pricing, I would look at Action Currency's web site and past eBay auctions for a decent guide. Pittbug's eBay sales are perhaps a secondary source of pricing information. Many other items on eBay BIN listings may be stupid high.
Other dealers websites (american paper connection, scott lindquist, first city currency, centurial collectibles, etc.) will give you a range of retail pricing.
Yes, eBay auctions are the best for modern notes, I think.
Prices seem to be all over the board with wide spreads??