I've made my first purchase from Toyin 2-3 months ago - 4 Distichodus and 2 Sorubimichthys planiceps catfish.
My experience totally matches that described by sbuse: great fish, reliable vendor in terms of what's minimally required. Anything more, might as well forget it. 1 to 2 to even 3 out of 3 emails will be ignored completely (even about wanting to buy, not to speak of other things) and at the end the buyer will be blamed for not communicating clearly and timely.
He is a great vendor for sure when it comes to basics, and that's perhaps plenty enough (sadly?) by our current standards.
He also is simply superbly helpful for someone to work on their meekness and humility. If you aim to exercise in swallowing your pride, feel free to ask for pictures or other extra stuff.
My advice keep it simple and basic with Rehoboth and it will work out, even if after a few tries.