Hi. $800 for a standard seems extraordinary unless it has some fantastic lineage traits that would for some reason drive it that high...even then...I've seen some from impeccable breeders with lineage still not go anywhere near that price.
I'm in Florida and have been looking into some breeders local (Other than rescues I've only had them shipped from Priscilla Price). I'm sure that Candy will have some answers on this topic as well as Nerdy Hails, who I know has a breeder she really loves...in the gulf central area.
The shipping issue is very daunting...at first I was very concerned. But, when considering a breeder with extensive experience with shipping (only the finest crating, handlers and airlines) it may be something you might consider. Not to promote Priscilla and her operation TOO much...I really have nothing but praise for her gliders and the whole buying process. You could also have one of hers with all pricing and shipping included for less than $800!!! You're probably aware but just in case her website is thepetglider.com Just something to add into your options.
Good luck and if you find some...please share with me. I'm seriously in the mode of actively looking for some more (particularly a male for my girls) at this point. Most likely will continue with P.Price but, am not ruling out local folks. Got the glider itch...not that it ever goes away!
Oh, and congrats on rescuing your your other baby. Sometimes it can go very sadly...as was my case with some.