The biggest challenge to Bitcoin commerce is the lack of consumer incentive to spend. Purse generates this incentive in the form of 15% discounts on Amazon. Buyers can purchase bitcoins with a credit card as easily as checking out on Amazon, thus solving the last mile problem.
I used Purse to buy several things (mostly hardware and tools for the house)
I have been always happy as they work as an escrow for the exchange and the discount is actually provided by the fact that there are people willing to buy things for you in exchange to bitcoin. 100% worth!!!
Aragon DAO