Source for RPL-like hosts?

Does anybody know of a source for these RPL knockoff hosts? Something like the Rayfoss FLX.

I'm going to be building several lasers soon, and I'm looking for a reasonably low cost host (probably need 5 or 10 to start with). There seem to be several cheap 50mW 532nm variations on this, so based on the price I would assume the host itself can't be that expensive. I've just not found a source for them yet.

I'm also open to suggestions if anybody knows of another low cost but reasonable looking host.

You can find the old models off some chinese resellers, but the new one is a custom one .