He's also on aquabid as swampriveraquatics. Never bought from him myself, but most of everyone's stock has their roots from him. Biggest endler guy out there and great prices.
I have always wanted black bars, I have dealt with lime green and orchid myself, along with a few hybrids, they breed like rabbits but don't produce as much fry as guppies can. I think my largest spawn has been 20 total. They are REALLY quick though, so make sure you are planning to keep them for a while as catching them is a PITA! I've got 1 female Japan blue left in my 28 and she refuses to get caught. Any time she sees a net anymore she goes into hiding for atleast an hour lol so they are really smart too.
Have fun with them! I enjoyed them a lot but like my guppies better now