I bought an EK chain from them through Amazon. Before buying I asked if it included a rivet-type master link. They confirmed it did so I placed the order. Upon receiving it I dropped the bike and chain off at the dealer, got it back with a clip-on master link. Turns out that's what it came with.
Had to spend a couple hours going out to buy a rivet master link and then having it reinstalled. When I complained to them, the response (Jason) was simply sorry with no offer of any partial refund/future discount for my additional costs.
But they do have damn good prices, usually the lowest on Amazon. I have bought a number of other items from them without a problem.