How much are the G2 unicorn princesses worth these days?

[VanillaBean]

I've been out of the loop for a while when it comes to collecting.
I have Princess Copper Glow in very good condition with her wings & comb, but I'm in two minds about selling her. She was my most-wanted G2 for years & I was chuffed to bits to finally buy her a decade ago. She has pride of place on my desk with a couple of G1 ponies & I look at her every day, but I feel like I probably don't appreciate her enough. I haven't been actively collecting for a long time now, but I'm pretty attached to my little herd.
I'm curious to know how much Copper Glow would be worth if I did ultimately choose to part with her. Thanks in advance!