Then you've come to the right place! Best Buy has good deals on 32GB, 64GB, and 128GB memory cards! Get them while you can, today is the last day! O3DS: These are Sandisk Ultra Plus memory cards. The 32GB one is SDHC, 64 GB and 128 GB memory cards are SDXC. They all have a write speed of 48 MB/s. 32 GB ($9.99, used to be $59.99) 64 GB ($19.99, used to be $99.99) 128 GB ($39.99, used to be $179.99) I personally got the 64 GB one because I don't need a ton of space and it was a great price. N3DS: These are Sandisk Ultra memory cards. SDXC. 128GB ($39.99, used to be $179.99) (more coming soon) So yeah like I said, Get them while you can, today is the last day!