hmm.... there's google that can help with that...

but uhh.... after installing some major vinyl and overlay work before... i dunno... tint doesn't seem that much different...

though yeah.. it does take a little finesse.
proper squeegee techniques

 

I tried the window tint from from SnapTint.com. They basically pre-cut the film to the size and shape of your scion windows, and you apply it yourself.

Since all the windows are so flat on my scion XB, it was pretty easy. The film they use seems good too; I took a sample to my local professional, and they verified it as lifetime performance film.

Total cost was around $85. Local places in SD were charging me $200-250 for lifetime film so it was worth a gamble. So far 2 years and no problems.