15 yr. Grey SE Nabiel daughter with melanoma: Worth buying?

[guest@endurance.net]

Karen Webb kwebb@gssb.com
I have found a lovely, coming 15 year old, grey, straight Egyptian Nabiel
daughter, but she does have melanoma.  A few lumps under her tail and one
below one ear.  The price is $5,500.  I have no prior experience with
melanoma and will of course, have a vet exam done.  However, it seems like
a large number of grey horses have this condition and continue to do quite
well.  True?  Anyone have experience with the condition in grey/white
broodmares?  Thank you.