IIRC they are very difficult/impossible to find in the US. Good luck with the search. If you do happen to find them let us know. They are a very attractive species.
There are a number of registered keepers listed at the bottom of the planetcatfish.com page you linked to. I would suggest joining their forum and inquiring with some of them.
And yeah... totally nice looking pleco... would love to know if you find them in the US...
I have been looking for a few years for them. I have found 3 people that keep them. I'm just waiting on fry. I was just trying to seeing if any CCA members have any leads?
Good luck with your searches, I won't be giving up my sources till I have a group in my tank. But, I did find keepers on the planetcatfish.com page I linked. They are keepers out there, just gotta poke around
Contact Barbie through Planet Catfish. She is one of the registered keepers and pretty big in the pleco trade. If she doesn't still have hers, she would probably know where to get them.