WANTED: 1300 x 900mm laser required

Hi all

Bit of a novice here!

Looking for a low cost laser for prototyping and low volume fabrication

Need to cut plywood up to 12mm thickness and also acrylic up to 6mm

Cutting area of 1200 x 600mm or greater required

Lots of affordable looking Chinese machines on eBay but don't want to end up with something useless!

HPC seem to be reasonable but a new one is out of budget

Does anyone have a used or modified machine that is reliable enough for my needs?

Or just some advice?!

Based in Hampshire

Thanks :)