Nope - it is a bad trade. If he saved a little up then you know as well as I do that the hatchlings coming from that clutch is much more worth than a 0.1 pied.
I mean he could almost buy anything and breed it with his growing 0.1 spider. Black pastel, chocolate, albino, ghost, spotnose, fire, yellowbelly, pinstripe, axanthic, lesser, butter and so on into eternity.
And she's even a good eater - it is a no brainer. He should keep her and breed with a decent male!Once the hatclings are hatching then he can buy himrself a high-white pied. Besides from keeping a great 0.1 spider, gaining some nice combos - then he can buy yourself a high-white or even a pair if he want. He is much better of in that manner!
Don't be insulted as my intentions are sincere and good.And why should he trade his hard labour (it takes some time to get a female that big) to start all over again - it dosen't make any sense!