I have a sort of accidental collection of Austin Powers memorabilia (I picked-up Michael Caine's "Nigel Powers" suit cheap at a PIH auction and it just snowballed from there) including one of the original shark lasers from Goldmember. The electronics contained in the acrylic section (the rest is molded vinyl) were originally battery-operated but I modified them to run off an AC adapter, though that means it's no longer watertight.
There wasn't alot of interest in it when Screen Used listed in on their site nor when they consigned it to PIH so i was surprised by how much attention it got at the SoCal RPF meet a couple of weeks ago.
By the time I bought it from Screen Used, the emitter rings had almost all come loose and the barrel was covered in glue so there was some restoration to be done. Also, it had somehow gotten to Screen Used assembled backwards -- making it about twice as long as it was designed to be -- and that, unfortunately, is the scale they built the display case to.