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[Glider]

Brettix,
Breeding pairs and trio's of Levis are not commonly for sale, especially around breeding season. These little guys have a 'general' value, but in fact worth as much as someone is willing to pay at the time. Some people want to start out with an established breeding colony and will expect to pay more for that than just buying cheaper hatchling clutches, raising them for a year then starting to breed then.
In this case someone thinks $1500 is a fair price to pay, so why shouldn't Celeste accept that? They're her animals and if someone is willing to pay more and accept her conditions, then best of luck to them.
I personally don't agree with the price and conditions, so I just choose not to buy.... you have that choice too!