Art price help

Admittedly, I am baffled by the in site art market. Prices are absolutely all over the place or astonishingply cheap and I am STRUGGLING to find a happy medium for my YWH. In-game currency only, how much would you pay for a YWH like this?

I mean, considering some of the prices I'd seen it can go all the way from like 5GC to like 80GC. For something like that, with the background (its very lovely by the way); Anywhere from 10-15GC? Depending on what your SC conversion is (mine is 60SC = 1GC) so like 900SC? You could probably go higher or lower depending on what it is but If you want a calm medium between high/low, I think 10-15 is fair.