it really depends on wat u want... prices start frm $180(saw it
on the papers today) to $1000+. generally, the more u pay, the
better the heat rejection... price also depends on the type of
vehicle... like MPVs n SUVs will hv 2 pay more generally.
My dad's using cool n lite... go to www.coolnlite.com
he gt the highest end 1 for 600+(special promo they said...) for a
sedan.
heat rejection is gd, esp 4 the rear(84%)... installation is very
fast n can play pool, watch tv/movie, listen 2 the radio, n even
drink red wine while u wait 4 them to finish!!!