Company websites

i have a big project. i have a group of companies starting up. i need about 20 websites designed. one or two are standard with a few with ecomerce, some need database, sites are from pharmacy, restaurants, investments, insurance, telecoms, shopping, dating, etc. i need them very proffesional up to date sites. once finished i need u to keep them maintained. ready to start straight away, but need cheapest possible prices, dont want to pay much, but will benefit you in the long run.