TTC Bolt/Addon needed

[peejaygee]

While I enjoy programming, I've never touched LUA, so......

Currently I use Excel and the price TTC gives me. As I'm not that bothered about making too much profit, so I hover over a item I'm selling, like a recipe or something, it shows me the TTC Suggested, min and max etc, I put that value into Excel I then it adds the percentage (listing fee and house cut) needed so that the final price I'm selling it, gets me close to the suggested price TTC shows me.

Is there an addon or a config, or something, that will let me punch in those figures, to keep them fixed in, so when I hover over a product, it will say something like "Sell this for :-" and a value. Maybe later on if my sales thoughts change, I could tweak the percentage, so the value reflects. Saves me flipping back and forth between the game and Excel.

Hope this makes sense to someone.

Thanks in advance.