i found a website a while ago where they had 2nd user monitors for sale. some cornerstone 21inch monitors to be exact and they were quite cheap too. anyone got any ideas? the site iirc had some blue menu on the left of the screen too. its a long shot but worth the ask.
Can't help with the site, but if you do end up buying a Cornerstone, make sure you've got the space for it. I had a CS 21" not too long ago (bought for around £70), but it was just too damn big - the casing was bigger than your average 21" TV. ...oh, and be bloody careful picking it up, they weigh a ton!
Hasn't got a blue menu on the left, and I haven't checked for that particular monitor but Monitor Warehouse sells secondhand/refurbished/rebranded monitors cheap.