Approximate value of a T2 mela pup, 500+ stats, 5M, NIB, 3rd and 4th gen parents?

(This is her)

She's the first melanistic wolf born in my pack, and there're no pups quite similar to her on the TC, so I'm not sure how much she's worth!

I'm deciding if I should keep her or not, but am leaning towards keeping her at the moment, unless her mother produces more like her later (it's possible she could even be a stud, if I make changes to her sex and markings).

• Melanistic,
• non inbred,
• parents are 3rd and 4th generation,
• 503 stats,
• T2 (sarder),
• 5 markings, nothing special.