The catch is it has to be sold by Amazon and you have to select super saver shipping at checkout; orders over $25 qualify for free SS shipping. Decent prices on some things. Picked up the MTX trunk bag DXP for $50; the next lowest price I found was $66 shipped from BikeSomewhere. MSRP of $87.

If you hold your breath and squint your eyes it's looks like a 20% off coupon with free shipping.