Amazon offers the SanDisk 200GB UHS-I Class 10 microSDXC Card, model no. SDSDQUAN-200G-G4A, for $49.99 with free shipping. That's $10 under our mention from two weeks ago and the lowest total price we could find by $9, excluding the mention below. It includes an adapter.
A close price: Newegg offers it for $49.99 plus 99 cents for shipping.