www.heartratemonitorsusa.com
Has good prices on the Oregon Scientific units the cool looking one is 69.95 with free shipping( but could only find it threw the amazon link). And one of the other ones mentioned is 29.95 free shipping. I never ordered from them but i'm about to pull the trigger. The OS unit I currently have would be great but it reads between +5 to +8 on humidity and that drives me nuts!