Get quotes from as many transportation companies as possible so that you can compare the vehicle options and pricing to find an option that best suits your tastes and budget. Here are some options that may help lower the price if you are on a strict budget:
1) Order a charter limousine: Have it pick you and the bridesmaids up first and drop you all off at the ceremony site. Then, have the limo circle back and pick up the groom and his groomsmen and drop them off at the ceremony site. Single charters are often cheaper than point to point transportation in multiple vehicles. With this option, you will also be able to spend quality time with your bridesmaids before all of the bustle at the wedding!
2) Look into towncars for the bridal party; they tend to run at a cheaper price.
3) If you and the groom want to see each other before the ceremony, you could have a separate car drive you to the ceremony and order only one limousine to take the bridal party separately to the ceremony.
There are many different methods of arranging transportation for your wedding. I highly suggest that you attend some local bridal shows to meet with transportation vendors. They usually send out specials after the show that could help you save some money on your transportation.