Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

These batteries don't fit in Samsung NX30 camera as advertised. They are not "compatible" even though they claim to be. After trying a number of different brands and models of these batteries, I finally got smart enough or desperate enough to buy one at retail outlet where the instructions were written. It fit, but is obviously an inferior brand. Now I'm stuck with it. Buyer beware. Don't try anything else unless you know for sure what you're getting.
Bad review