Gear Amazon Deal of the Day: DeLorme PN-40 GPS By Jeff Barber March 18, 2010 Just a quick shout for those of you considering a GPS for mountain biking this spring: the DeLorme PN-40 GPS is Amazon’s Deal of the Day today (March 18, 2010). At $219 it’s almost 50% off which ain’t bad. Read our detailed review here. Share This: Tweet Jeff Barber Jeff co-founded Singletracks.com with his wife Leah (mudhunny) in 1999. Today he works out of Singletracks World HQ in Decatur, GA as the Editor in Chief.