My only experience with them was some years ago but very disappointing, 2 out of 3 of the fish I ordered were the wrong species. One of the wrong fish was an equally nice species to what I ordered, but the other incorrect species were common, inexpensive Burundi frontosa shipped to me as more expensive C. gibberosa (I forget the location they were supposed to be from). The difference is subtle at smaller sizes but since then I've bred C. gibberosa kapampa and know the difference. However, at the time, while I was suspicious, I wasn't certain and hoped for the best, only to confirm after several months they were Burundi of common lfs quality and not what I paid for, meaning I had to buy again from another source to get what I wanted.
It made it too late to get back to them and seek a remedy, except to vow I'd never buy from them again.