I was wanting to price out someone's use of the taltherian enriching ability. I have a the planet which needs 21 uses of the ability. How much would it cost me? Assume no use of gp/colonization costs.

You're looking at 35 days that the Taltherian would be devoting to your planet, so I imagine it will cost a good bit. I know I wouldn't be selling my Kronyn ability cheap...

Also is the target planet Unoccupied or do you currently own it? If you own it, you realize you would have to GP abandon it unless you got it from a legion mate that still has the scan. If that's the case, you'll be looking at covering an invasion cost as well (and to have the rank to actually finish the Talth chain, invasions don't come cheap)

Its unoccupied, so its at least less of an issue. I figured it would be pretty pricey, but I was seeing costs of 25k ish for a 15x gas, so I figured I would scope out prices.