Hi,
I think ladyohh posted a sample contract at one point - searching for that would probably save you some time.
And the reason that pastel was more than a bee is simply because it could have produced anything up to 10 eggs this year and each one would have had a 25% chance of being a bee.
You should have bought her.
You'd have not only likely got the bee you wanted but probably recouped your costs and possibly even made a profit.
Which is why not that many people sell breeding age females.
dr del