Unless you are buying them as guarenteed to be gravid, you might as well not expect it. The price seems nice if they are big fat healthy females. Yes, females can still be breeding this late, it happens. My season is extremely late this year and I saw a lock up just three days ago between a pair of mine.

But with shipping, maybe gravid, etc etc. There's no guarentee they'd be gravid, or that they would lay viable eggs, or that the eggs would make it full term, etc. It's all a roll of the dice.