When you buy digital images from your gallery, they are sized to print at their best at 10×8”. If you’d like to print much larger than this, then you can upgrade to a USB which will give you files sized at up to 24” on the longest edge. Plenty of quality so you can print all the large photos your heart desires!
Here’s an important cautionary note though, even if you have the USB then make sure to back it up somewhere secure online as well. There’s lots of factors that can affect a USB and you don’t want to lose your images!