Nikos-
I'm partial to Saris racks as they are much easier to actually mount on your car than the offerings from Thule or Yakima. They also have a lifetime warranty. Any respectable LBS will have the fit guides on hand for the brands they carry and help you in picking and installing a rack. You would be surprised on pricing (our shop prices are VERY close to those in mail order catalogs), plus you will still pay tax and a substantial shipping charge if you purchase via mail order.