I think the one that was for sale in the BST is now sold, it was a very nice unit sold by Brendon and originally made by member "Offroadfreak".
For Sale Ophir 20C-A-1-Y Laser Power Meter Includes everything you see above. Can read from 1mW to 5000mW standalone or with datalogging via the laserbee software (included). Can read over 15000mW if you install a heatsink (cost's less than $10). Response time 0-95% 1 second faster than...
laserpointerforums.com
There are a couple of Ophir 20C-A-1-Y heads for sale on ebay, but they're expensive, one is going for $449, and the other is sky high at $700.