The Internet is full of stores selling quality products, – but also fake products or products that contain high mounts of heavy metals, especially if they re sourced from China. Before you consider purchasing off of the Internet, you should research the company to ensure that they are a reputable company and source their products from reliable vendors. For instance, Bulk Supplements has a wide range of products that I really like. Their reviews on Amazon of overwhelmingly high and I know from my on experience that they sell high quality products. I recently ordered some more L-Citrulline powder and it arrived the next day! So research the company before you buy, and stay away from companies that have been tied to selling their fake products in Walmart.