you can get used from Mo at videotronics,he has 25" polo/polo2 and i would imagine a few 26" wgu5000 and possibly some nanao ms8-26
be aware that you would need a stepdown transformer for some monitors
polo/polo 2/u5000 are all ok to run on 230vac direct mains
if your cab monitor power cable has a 3 pin mate n loc connector then the original monitor is a polo,if it has a 4 pin green plug then the original is a mtc9110