Limousine in florida dont know how much it will cost!!!!!?

im planning to get a party limo for prom with me and 10 other friends. but i dont know how much it will cost every hour. i need the limo to pick us all up take us to prom then later we all go out to eat then it takes us home. we dont care if its a hummer limo, were looking for the standard types. can you help me figure the estimate of how much it will be?