Yes, is there a problem? Usually very few people leave comments when they use it.
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If the quality is good, then it’s worth the price, and buyers will know for themselves whether that price is reasonable or not. If the quality isn’t good, people simply won’t buy it, because the decision to buy or not is entirely up to you. If a product is not good, someone else will warn others anyway.
Normally, when I buy any product, I think carefully before making a decision. So once I’ve bought it and it matches what the seller provided, there’s no reason for me to complain, and there’s also no reason for me to leave a comment—simply because it’s a fair deal and I just buy and use it.
That’s why I only trust the quality shown by the seller: the images, the products they’ve sold before. Feedback or comments are just for reference, because not everyone who buys something has the time or interest to leave comments or feedback.
If you’re hesitant or worried about the price, then don’t buy it—no one is forcing you to. If someone else finds it reasonable and suitable for what they’re looking for, they will naturally choose to buy it.