We always keep the Ling Ling Potstickers from Costco in the freezer for a quick, tasty and reasonably priced supper. A bag costs about $10 and there are coupons now and then. We typically get about 6 to 8 servings out of a bag, so the cost is quite fair. They also cook up in about 10 minutes and thus there is a not a lot of waiting around for dinner.
My wife did discover that she gets a better flavor out of them by adding some sesame oil when she is cooking them and also by adding some szechuan sauce to the dipping sauce they provide. Speaking of the dipping sauce, they provide multiple packages of it in the bag, so that makes it even more convenient.