If the het albino pair are adults and proven breeders, I'd say it's well worth the price, even for the male. Sure you can get het males for $50.00 but that's often for young unproven males. It could be a good deal, you just need to ask more questions from the seller.

1. How old are they?
2. Are they proven breeders?
3. Has the seller produced albinos with this pair?
4. who was the original breeder that produced this pair and how can I contact them?
5. Do you have a sales slip or ID cards from the original breeder?

Unlike a lot of people, if they don't have any actual paperwork, it's not a deal breaker for me as long as I can get answers to the other questions.

As others have said, $150.00 for a three year old pastel is a good price, as long as he's a proven breeder.