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.
Price/Value. Garden of Life Primal Defense Ultra comes in at $33.99 for 90 capsules. If only taking one capsule daily, the price is 37 cents a day (which is cheaper than average). However, if you bump up the dosage to 3 capsules a day, which is recommended, the price comes in at $1.13 a day.