You can set any price of newly issued token. It does not reflect its actual cost anyway (actual cost is zero unless token is backed by some useful project)
Circulating supply: the number of tokens that are publicly available and circulating in the market. Total supply: the number of tokens in existence, i.e., the number of tokens that were already issued minus the coins that were burned. Max supply: the maximum amount of tokens that will ever exist, including the tokens that will be made available in the future, i.e., in the case of a reissuable asset.