The popular Bowflex Heart Rate Monitor Watch drops to $12.99 through Groupon. Even with $2.99 shipping, your $16 total is $4 less than any price we've seen in the past 6 months and comes within $1 of the price we found then. This is $117 off the list price and beats Amazon's current price by $57. The watch is available in several colors and features a stopwatch, countdown timer, heart rate monitor, and more. Sales tax is charged in most states.