So, if you knew anything about the commercial market and the relationship between wholesalers and retailers, you would know that a 3x markup is actually about the smallest you typically see.
Those jewelers you see with those three balls hanging outside their door? That's a statement by the jeweler that they are "triple-key", which means that they intentionally limit themselves to 3x markup on most items (the expensive ones). It used to be that many jewelers had a much larger markup that they typically charged, and many still do.
So, if you want to spend your time dealing with a wholesaler that might or might not be the same supplier that iFixit uses, and you want to take your chances on whether you're getting dodgy equipment from some fly-by-night Chinese company that has copied the look of the quality tools you might otherwise get from a trusted retailer, then more power to you.
I'll stick with the trusted retailer, myself. I think iFixit is one of the few relatively honest companies left in the business, and I'd prefer to continue to support them with my business.