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.
Despite the fact that they are still called GLASSes, these days lenses are made from lighter and less likely to break plastics. Surprisingly, losing the single screw holding a lens in place is rarely done on TV. Which, in real life, are far far harder to find.