According to @borgetsebastien, The Sandbox Alpha Season 6 now supports credit card payments via Transak, enabling direct fiat purchases of NFTs. According to @borgetsebastien, items available by card include Avatar Collections, Season Premium Passes, LAND, and user-generated NFTs on the Marketplace. According to @borgetsebastien, these purchases no longer require SAND or a crypto wallet for the listed items, meaning transactions on those assets can be executed in fiat rather than SAND.