Shaky,
Here is a link to one that Scott Lee used for my lesson. I already had a craftsman so mine is different/more expensive.
http://www.amazon.com/Black-Decker-BDL220S-Laser-Level/dp/B000B8GBBS/ref=sr_1_11?ie=UTF8&qid=1360517791&sr=8-11&keywords=laser+level
Steve
Scott,
They added the $2 case so they can charge 2X!
The laser that I already had that works great is listed here:
http://www.sears.com/shc/s/p_10153_12605_00948251000P?sid=IDx01192011x000001&kispla=00948251000P&srccode=cii_17588969&cpncode=33-140693874-2