I bought 25K Wolf primers this summer for $89/5K. I've use about 5 thousand of them without any problem.
I use them for trap shooting and load both 1oz. and 1 1/8oz loads using both Clays and ClayDot powders.
I have shot them in temps ranging from 90degrees to in the low teens. As long as you keep your ammo at room temps I've experienced no problems. My normal primer has been Fiocchi but for the price I decided to try Wolf, have been very happy so far.
When you get right down to cost though here's what you're really saving.
$150 /5000 = 3 cents
$110/5000 = 2.2 cents
So for the better primer it's only costing you about 0.8 cents per load or 20 cents per box. Not much except for the 10,000 rounds I reloaded this year, that works out to be $80, which I consider to be a decent savings.