If you want the proper set up, it will cost you anywhere from $600-$900, including the chameleon. I bought my guy at one year, and he was $150. You can get babies online from anywhere to $40-$70. Pet stores will rip you off and don't care properly for their animals--look for a breeder, or a reliable reptile store.
Sunglass frames are made from metal or plastic. Metal frames, particularly expensive ones, are often made of mixtures of nickel and other metals such as silver. These frames have precisely engineered features, such as sculpted and gimbaled nose-pads, durable hinges with self-locking screws, and flexible temples.
Some eyeglass frames have components that can be snapped into place, rather than attached by screws or other means. This type of feature can be handy if you choose to mix and match different colored temples with the same set of lenses.