Don't talk to the employee--talk to the manager.
It sounds like the store hasn't done much research on ball pythons. They got ripped off on the albino. You see, retail stores must do around a 50% markup to make money. So, someone sold them the albino at retail price, and they marked it up as usual. In reality, they should not have purchased the albino for any more than half that price, but it's clear they weren't aware of the current retail price for an albino ball python.
Someone took advantage of their lack of research, and made twice what they should have, selling to a pet store.

An employee doesn't necessarily have the authority to give you a break on the price for the large ball python, but the manager or owner does.