----What is the enhancement in mind? How should it look and feel?

Define the Market Value line more in the tooltip and add a short explanation on the addon's page describing how it works.

----Please provide any additional information below.

I understand from the in-game options that Market Value comes from Auctioneer, however the Market Value line in the tooltip has little explanation anywhere (in-game or out) as to what it is displaying.

For example on Ghost Iron it shows me two values, after some number crunching I know that the first matches Auctioneer's market value for bars and the second equals the market value for the equivalent amount of ores. (ie. MV Bars - MV Ore x 2 = Number telling me it's cheaper to buy one or the other)

However, when I go to search for Trillium, the tooltip gets complicated and adds a second line.  There is no way from the tooltip to know what each line is referring to, I have to know what makes Trillium and then go compare market values myself to figure it out which each line is referring to.  The first line shows me the cost of transmuting from Ghost Iron Bars and the second line shows smelting it from the Trillium Ores, however the tooltip does not tell me this.

Living Steel is equally complicated, except this time it is between two transmutes one of which looks significantly cheaper because it uses non-auctionable materials.  That of course isn't something you can control, but again, no way to tell why from the tooltip as-is.

I'm not exactly sure what would be the best way to clarify this information, but perhaps icons or names of the spells would help?  I realize it will make the lines longer, but it would make them actually useful...

Aside: The "Source" line always saying "dropped" for bars since they "can" be drops also isn't very useful since their primary source is crafting.