I placed an order with aixiz 2 weeks ago for 3 line lenses and 2 power adaptors, and only the 3 line lenses came. And when I tried contacting them about the missing adaptors, they said “maybe they’re on back-order. I’ll check and get back to you”. and they didn’t. and the same type of response to the email i got 2 days ago, except that was just “I’ll research it”, to which there has been no follow-up.
So I got creative, and am very pleased to say the local Radioshack had an easy solution. They offer an adjustable power adaptor with an output of 1.5-12VDC @ 300 mA. got mine for $25 after tax, and I can wire my lasers however I want, without adding many other components to the circuit.