We paid about the same,$590 per window. the 800 series is a nice window and we noticed a big difference in comfort.
we also looked at some other window companies and immediately scratched off those "$249" per window as they were obviously very low quality windows. we are holding off on a bow window for a while due to some construction we are having done and we don't want to ruin a new bow. we are looking at the woodgrain interior Okna offers which we though was very pretty. good luck and welcome to the new window club!

we just had our new Okna 800 series windows installed. very happy thus far. its been very cold and windy which serves as the perfect proving ground for new windows. The Okna's definitely passed all tests; no drafts,no air infiltration. the guys also did a great install and capped all of our windows with aluminum. as i said in my original post,we looked at much cheaper windows but came to the logical conclusion that cheap windows become very expensive when you have to replace them again in a few years.
thanks for all the knowledge i gained from this site.

That is a very aggressive price and a great window.

Congrats and thanks for the follow up.

mmarsel- do you know of major homes corp? they are giving me an estimate on Okna windows next week.

no, dont know about them. i can tell you most of their dealers are reutable.
as for the window, its very solid. i saw all the junk/cheap windows from MI Windows, united, alside, and silverline. all were very flimsy and looked cheap. when i saw the okna 800 envirostar, i loved it. its a very nice looking window. very solid and doesnt look like a run of the mill vinyl window. i did notice a big difference on my energy bills as well.

queenskitchen - do you mind posting a follow-up on your Okna quote with Major? I'm looking at the same windows and contractor, would love to hear your experiences both with the window and the install.

They sound like a solid outfit, but they claim they don't put insulation in when they install the windows, which gives me pause.