The WeeRaptorZ Halloween are a special halloween limited edition of 20 nft entirely drawn in voxel design.
They are sold on the avalanche blockchain, in AVAX currency.
They are available on several marketplaces:
KALAO : https://marketplace.kalao.io/c-la
OPENSEA : https://opensea.io/collection/wee-raptorz-halloween
Reference links:
What Is a Blockchain ? https://www.investopedia.com/
What Is AVAX ? https://www.avax.network