First, you've never heard of packing the right rear with mud without a mudplug because....thats never been an option. There's no rule that says you have to run the beadlock, so don't. I've lost enough right rears that it's a no brainer on this end, for safety more than performance. As for affordable...thats your own, personal call. Its not mandatory, so you can't really complain about that either. We've been fighting for years to get it, glad to have it.
My .02
Jim