An SPL token is an account

A fungible Solana coin is a mint account plus a balance in each holder's token account. MintBox creates the mint, attaches a Metaplex metadata account (name, symbol, and a URI), and mints the supply you chose into the associated token account of the wallet that signs.

Authorities are the dangerous switches

Mint authority can create more supply. Freeze authority can freeze a holder's account. Update authority can change the metadata while it is still mutable. The form defaults to revoking all three. Leave mint authority on only if you truly plan to mint more later, and say so in your own materials.

The platform fee is one transfer

The create form adds one SOL payment. The base amount is 0.1 SOL. Each lock that is on adds 0.05 SOL, so the default total is 0.25 SOL. Copying a trending coin is a separate flat 0.5 SOL transfer, and that price already includes all three revokes. The transfer matches the amount on the button. The destination is the public key in FEE_WALLET_ADDRESS. The transaction is assembled in the browser and rejected by the app if that transfer is missing, duplicated, or the wrong size, or if it contains a token approval. Solana still charges its own network fee, and new accounts require rent. Those are not paid to MintBox.

Liquidity is a Raydium CPMM pool

Creating a pool deposits your token and SOL into a Raydium constant-product pool and returns an LP token. Adding liquidity deposits more of both sides. Removing a percentage burns that share of your LP and sends the underlying tokens back. Raydium's own pool-creation fee and the pool's trade fee are theirs. MintBox adds its own disclosed SOL transfer to the same transaction.

Nothing here is a promise about price

A launched coin can trade at zero. Copying a name does not copy a market. Devnet coins are test tokens. Read the terms before you use mainnet, where the SOL you sign away is real.