Every year around this time there's a thread about the $12 Costco ski glove. This year the price is up to $13.
I also tried them. Two seasons ago a fellow from BC said on here he used them the prior season in sub-zero temps and his hands stayed nice and warm the whole day. That sounded good enough, so I bought some. I think over three or four trips to Costco, I got a pair almost each time. And at the time they had a $3 off coupon, so the price was in the single digits. Too good to pass up.
But I'm seen what Phil says, one pair lasted three days on the hill before the stitching at the seam, between the fingers and the palm, started separating. The hole got big enough that I can see an inner white liner, which is what makes these waterproof (still have two pair in the original packaging, 'guaranteed waterproof' it says).
They are thick and lofty, easy to put on and take off, with nice unobtrusive wrist straps so you don't drop them off a lift. All in all, for $12 (less if you get a coupon), it's hard to complain, even if the stitching does tear. I can see how for a large family these are a huge bargain.