Are there any modules out there that can add AuctionDB as a price source for Appraiser? That way, I'd be able to combine it with Auc-Stat-Sales and Auc-Stat-iLevel to get better market-value estimates for low-seen-count items.
On a related note, does anyone know if there's a way to post auctions using Appraiser, but use thresholds and other settings from TradeSkillMaster when doing so? I like TSM's ability to set a threshold based on crafting cost and limit the total amount of an item posted, but it's missing several important features that Appraiser has (round-down pricing, Auc-Match-BeanCount, minimum vendor markup, and pricing methods that take the deposit into account).
Sorry, but I don't understand the "Update AuctionDB Data Automatically (without scanning)" sentence. Does it pull the data from a thin air?
Regarding your last two questions: You're best asking that addon author. It's not a rocket science to use Auctioneer API to export a few necessary functions.