This method also requires some sort of key store (see above). However, if you want to maintain just one key, each key rotation will require you decrypt data with the old key and reencrypt with a new key. Again, it depends.
Although the Razer DeathAdder Chroma technically carries a suggested price of $70, it's often available at a healthy discount. For now you can grab it for $49.99 on Amazon or around that price at other big box retailers. Durinf extreme sales events like Black Friday, the DeathAdder Chroma can drop to as low as $35.
The price of Juvederm and Restylane dermal fillers will vary greatly based on the geographical area as well. The range can be anywhere between $300 and $1000 per syringe. How many syringes the doctor will use depends on how deep your wrinkles are, what facial areas you want treated and what the desired outcome is.