I've got an '02 LX and when I bought the vehicle it had no rear spoiler, but the rear window washer pedestal was broken off and the surrounding sheet metal was dented slightly.
I decided to add the "whale tail" style rear spoiler as that would hide the small dent. (Personally I prefer that style to the aluminum version.)
I bought mine on
ebay, but had a pretty miserable experience. The first one I bought didn't look at all like the photo in the listing and the seller had a "too bad- so sad" attitude. I was successful in going through
ebay to get the return. The second one (from a different seller) looks a lot like the oem one.
Installation was a bit of a pain, but I'm very happy with the outcome.
The "factory" spoiler has a third brake light and they use a filler panel that replaces the third brake light in the rear hatch. The
ebay spoiler did not have that filler panel so presumably you have two third brake lights?
I thought that was kind of cheesy so I bought a Toyota third brake light filler panel (they come pre-painted and color matched to your vehicles color) and used that in conjunction with the aftermarket spoiler.