Trading standard chiefs said they were "seriously concerned" about the sale of the model and have warned against its use.
As well as blinding, burning and causing cancer, its Hong Kong-based maker admits that "a split-second laser light in a plane cockpit (...) can be disastrous".
Star Wars fans are among hundreds of people who have already shown an interest in buying the laser, for sale to the general public for £135 or R1576
An expert, said the 1W beam was 1,000 times stronger than laser pointers normally available to the public.
They could be "deadly" if aimed at car drivers or even pilots in planes, Mr Colton added.
Wicked said the device would have cost thousands to build not long ago, but technological advances have made it available much more cheaply.
"This laser possesses the most burning capabilities of any portable laser in existence," the website reads.
"That's why it's also the most dangerous laser ever created."
The website goes on to warn: "Extremely dangerous is an understatement to the power of 1W of laser power.
"It will blind permanently and instantly and set fire quickly to skin and other body parts."
It adds that users should use eye protection and must read and agree the "Laser Hazard Acknowledgment Form".