The Sculpfun S30 Pro 10w with Air Assist is about $500 on Amazon (US) now.
DISCLAIMER: I do not get paid by Sculpfun, but I am a happy customer. They are also rated the smallest dot size and depth of field in the diode laser industry. Focus at 50mm from the laser body. I smoked (not on purpose!) my spoilboard at 100mm (4") and 20% power when first checking it out.