The only real benefit a laser has over a Router in cutting acrylic is a polished edge and smaller kerfs. Sometimes , especially with thick stuff , router and flame polishing gives far better results. Of course the other benefits are that you are essentially using a "bit" in the laser of minimal thickness and there is no contact with the substrate thus no hold downs required etc
You could actually buy 5 good large format routers from China for 50k quid (maybe even 7)