It's seem like $10 less than most of retailer this week.
As I recall, Walmart black Friday is selling $69 but forgot whether have lifetime maps update.
Another choice (if you are or know any costco member) Costco [costco.com]
with American Express $25 credit for $100 spend in costco.com make it down to $75
How to get $25 credit for $100 pend in costco.com? Do one needs to sign up somewhere?