hiring blockchain dev

I am a business owner that provides blockchain products such as:
costum smart contracts on eth,bsc, solana
nft smart contracts, collections
costum dapps, nft minters, marketplaces and so on

i need someone that can work with us that has knowledge and experience.
if you just copy paste that's not for you
submit your proposals giving me some prices and a brief description of your skills:
-cost and timeframe for nft smart contract
-cost and tiemframe to build a complete nft marketplace
-cost and timeframe to develop a solana nft contract
-cost and timeframe to build a dapp where people can mint and view their collections (with backend ofc)

thank you