I don't quite understand what op mean, but if he's asking for the price of the assets of those projects, simply check coinmarketcap, but if you are asking for what it cost to get an asset listed on the platform, I would categorically tell you it doesn't any thing other than you any any other person having to add liquidity to token which will also determine the starting price of the asset, you don't have to pay any money to uniswap or sushiswap or one-inch cus this are all decentralized exchanges.
You can also contact this exchanges privately for more information on how their platform works.