select seller_address,

count (distinct tx_hash) as Sales_Count,

count (distinct tokenid) as Tokens_Count,

sum (price_usd) as Total_USD_Volume

from ethereum.core.ez_nft_sales

where nft_address = '0x394e3d3044fc89fcdd966d3cb35ac0b32b0cda91'

and price_usd > 0

group by 1)

select avg (sales_count), avg(tokens_count), avg (total_usd_volume)

from maintable