Samsung's least expensive and most compact mirrorless camera, the NX1000, is finally available for purchase, shipping today for $700. The entry-level kit, which was originally set to hit retailers last month, includes a 20-50mm f/3.5-5.6 lens, a 3-inch LCD (no AMOLED display, sadly) and the same 20.3-megapixel APS-C sensor included with the higher-end NX210 and NX20 -- those models add an AMOLED display and electronic