Could you elaborate on the notion of "average income for NFT"? Given the wide range of NFTs available, from digital art to in-game items, the income potential varies significantly. NFTs are unique digital assets that can be bought, sold, or traded, but their value is often determined by scarcity, demand, and the creator's reputation. Some NFTs have fetched astronomical prices, while others remain relatively affordable. Therefore, calculating an average income for NFTs is not straightforward. It would depend on various factors such as the type of NFT, its rarity, the market conditions, and the seller's strategy. Could you clarify what specific aspects you're interested in regarding the potential income of NFTs?