Just search for any color, 256GB, cellular, no engraving check local pick up for Austin Texas. I checked around a few times after they opened, then try again in a hour, and repeat, check mid afternoon. They do show up. As for 64GB, you don’t usually fill up a iPad mini storage, unless you just make all your GBs of images, or music, movies local to one device. Or go nuts downloading multiple games. Right now with my apps, files, and accessing online content, I’ve got 40+ GB free. You can always offload files to iCloud, or store then on UBC-C storage with that port now on the Mini. I guess I always used a MBP for storage, not the mini.