Where have you found them?
Actually JC, we first discovered the chaise lounges in a place closer than you may realize. After visiting the Axiom factory back in '04, we attended a spa resort about 40 minutes away called Grail Springs that had them in their luxury rooms.
We asked them about where they procured the chairs and found out they were custom ordered. The maker was Rowe, though i'm not sure they still build this style anymore.
I think Vogel has something similar, though i'm not as sure about their quality. www.vogelchair.com
Our versions are extra wide (chair and a half) so they can fit two reasonably proportioned adults.
They were not cheap as chairs go.