One of the few vendors that tests for sterility, endotoxins, and heavy metals in addition to purity. Order shipped same day, product arrived two days after. No issues regarding quality with any of the peps I've ordered so far, and I feel the prices are fair - especially given the additional testing done. My only suggestion is keeping the test results in the product images more up-to-date, though finding the most recent COA's was easy enough. Solid experience, hope these guys keep doing well.