Well, you have to admit it would look a bit Beverly Hillbilly.
Taylor Made fenders have lifetime warranty against bursting or splitting. As you point out, they are expensive, but they are the last you'll ever pay for.
Actually that is what I have- the Big B I think they are called. Paid about $90 a piece. They do have life warranty- but read the fine print- does not cover "wear" damage- only burst or split. I got some old tires from my last tire change that are free. I will still use the Taylor- but think of letting the brunt of the fending be done by an old tire. Don't really care what it looks like, I'm tied to a "working" dock, just want to protect the boat.