think about the item, it's 1024px. only people who really want it will buy it. otherwise, just stick with the 512x grounds or lower.

the main idea of the ground is mentioned above which is making the pictures on the ground look more detailed and not pixelated. pretty sure this will look good in-game and make people more interested to buy this item. heck, why not sell for USD and even make it a limited stock/collection item? that'll be much better.