I am not comfortable recommending any group buy links. As more experienced and knowledgeable (I.e., cynical, jaded and burned) Forum denizens can attest, group buys are often fronted by shills pimping for specific sales reps. Group buys touted directly by sales reps are just mass sales pitches. My naive understanding of a group buy is a private citizen researcher recruiting a group of like minded peers and then leading an effort to negotiate a favorable deal on a large quantity of product, either shipped directly to end user or reshipped from the vendor. Testing often part of the model as well. GOOD LUCK FINDING THAT AND HAVING IT WORK AS ADVERTISED. (I’m in the middle of one and it’s taking forever and the original test results are NA (new product being synthesized) and I don’t think we’re saving anything.)