Amazon offers the SanDisk Ultra 128GB Class 10 microSDXC Card with Adapter, model no. SDSQUNC-128G-GN6MA, for $59.99 with free shipping. That's tied with our preorder mention from last month as the lowest total price we've seen. (Aside from the mention below, it's a current low by $6.) It includes an adapter.
A close price: Newegg sells this card for $59.99 plus 99 cents for shipping with coupon code "EMCAXNR58".