The state of Texas requires an annually renewed permit for any nonnative venomous snakes, in addition to Burmese pythons, African rock pythons, Indian pythons, green anacondas, and reticulated pythons. The recreational ownership permit cost $20 a year. There's also a commercial permit for anyone who intends to sell regulated species that costs $60 to purchase an renew annually. In addition to a permit, record keeping is required for any individuals of the regulated species being kept in the state.
That said, it isn't an unreasonable regulation by any stretch of the word, and is far better to have this piece of regulation as opposed to the draconian garbage that requires an insane insurance policy, specific caging, micro-chipping, random inspections, and to top it off, the permit itself be super expensive.
Also, I've noticed the fact that Texas even has a regulation in the first place greatly benefits USARK's lawsuit against the USFWS.