Since most vehicles being built today are front wheel drive, there really is no need for spoilers so they are now more aesthetically pleasing than for vehicle control.
Adding a spoiler to your vehicle will certainly make your vehicle stand out. A vehicle sporting a spoiler gives the edges of the vehicle a clean distinguished look. Other than a true air dam that is actually winged and meant for racing, any car fan will tell you that putting an air dam on the back of a front wheel drive vehicle is strictly amateurish and shows that the owner has no knowledge of vehicles.
Where to Purchase Aftermarket Spoilers
An aftermarket auto parts supplier will have more than one style on hand for your particular vehicle and the pricing will be more than competitive. For any given vehicle, there is usually two to three different models of spoilers made. What you want to check when purchased is that the fiberglass is not cracked nor warped. Also measure the bolt alignment to make sure the spoiler will attach to your trunk deck lid.
Depending upon the age of your vehicle or the likelihood that it was never meant to race, check the salvage yards in your area to see if your vehicle has been listed in their database. If they do have a vehicle there that matches yours, ask them to check and see if the spoiler is on the vehicle. More often they will not want to part the spoiler from the trunk deck lid so you may be purchasing a deck lid.
If all else fails and you can't find a spoiler through aftermarket resources or salvage yards then try the dealer. If the dealer does have one for the model of your vehicle, rest assured it is going to cost you a pretty penny. The only good thing about getting a part from a dealer is that you know it will fit and is backed by the manufacturer.
Sourcing affordable car spoilers on the internet
Affordable car spoilers (just as any other product you can think of) can be sourced on the internet; you can find all of the spoilers mentioned above original spoilers, second hand spoilers and aftermarket spoilers online.
When buying anything online, check the seller and make sure you are dealing with a reputable company.
If you want to buy online make sure that you are dealing with a reputable seller that can answer any questions you may have, and that sells good quality parts and has a good reputation
For more valuable info about car parts and accessories check out car parts. You can also find lots of other interesting automotive topics for free at used cars

