When I looking for PCBs for my newly built supergun, I run across the parts section at Cosmic Amusement and found...
http://home.netvigator.com/~cosmicco/partslist.htm
CHASSIS 29'' 666 15 / 24 / 31Khz NORMAL / HIGH / S. HIGH RESOLUTION NEW ASTRO CITY (US$180)
CHASSIS 25'' ~ 29'' 988 15Khz NORMAL RESOLUTION (US$55)

CHASSIS 21'' 15Khz 688 NORMAL RESOLUTION (US$35)


A NEW 29" (model 988) Low Res RGB monitor cost only $55 ?!



I phone and ask and the lady there said they all got a working voltage of 110V, and the 29" model 666 for New Astro City only weight 2kg. I ordered one immidately.
Just cannot wait to see this baby in Tate.
Well, yes these monitors does not got a case, but you don't need the monitor's case to play shmups, you needs it to accept 15kHz RGB. If you does not have the space a 29", you can just order a 21".