There are plenty.
16GB microSD card: http://www.amazon.com/Kingston-Digital-microSDHC-SDC4-16GBET/dp/B00DYQYLQQ/ref=sr_1_23?s=electronics&ie=UTF8&qid=1441080005&sr=1-23&keywords=memory+card&refinements=p_n_shipping_option-bin%3A3242350011%2Cp_n_is_free_international_shipping%3A10236242011