I would at least like to try them out.  I've looked all over the local market in Los Angeles and I haven't found anything.  Maybe I'm not google savvy.  Naaaah, that can't be it.

Have you tried here:
http://www.macwestgroup.com/contact.html
 
they are in Long Beach.

I found PS18E-D on eBay. I have interest in 18sound too. If you manage to get it, please give me your impression.
 
Toshiaki

I have been to the Macwest website.  I wasn't sure if they had any in stock as they don't appear to be a store.  I wish to try one out before making a decision.
 
I'm actually not seeking a powered speaker.  I'm still of the old school Amp >>> speaker >>> out

Toshiaki,
 
That cabinet is different in two ways:
 
1) it's an infra/elf subwoofer
2) it's powered
 
I don't know if it comes with an elf/infra integrator, but these are required for the cab to operate properly.
 
Maybe you knew that, but I didn't want you to end up surprised.

Bradley,
 
I know about ELF. I have interest in both ELF and conventional so I thought that Mike might has intelest in them too but he seemed to prefer conventional. I've never find BAG END 18cabs even in Tokyo. I want to try them someday.
 
Toshiaki