In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
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Question: I will never buy again from 3rd party sellers. I ended up paying too much for returning the product.

Answer: I will never buy again from 3rd party sellers. ...

Question: This guard is Very big and bulky when in your mouth. It's marketed as a anti snore device, but it doesn't work for that at all. Snore just as badly as always have; but now can't close my mouth to sleep while wearing this because it's huge and uncomfortable 😣

Answer: Not a great guard unless you're built like a sumo wrestler

Question: Good packaging, lighter looks great but doesn't live up to the hype, lighter does not work

Answer:
Great packaging, Great design but unfortunately does not work