Back in the summer I purchased one of these off of amazon for 15$ CAD with free shipping. Not only is the massdrop price not worth it but the MSRP is extremely misleading.
For those of you who are still considering throwing your money at massdrop though, it is an amazing product and I would highly reccomend it. High capacity, quality build, nice soft-touch finish and a perfect shape and weight.
There is one downside though. The battery has auto shut off circuitry if it thinks a device is not drawing power from it(i.e to turn the charger off when your phone is fully charged) Sometimes your phone will not draw enough current (charging the phone but making the battery think nothing is charging) and the battery will shut off. It takes a couple tries of plugging and unplugging your device until the batteries circuitry figures it out. (Just so you guys know this problem occurs about 5-10% of the time you plug a device in to charge)