I won a auction for a waki on e-bay for about $450. USD. It is uba with a mei but has a fatal flaw. the yakiba runs off the blade at the kissaki. (no boshi). So what I did was to clean the blade with was 99.99% pure methanol, then treated the blade with Renaissance Wax. Most collectors know about Renaissance Wax, however I am sure it is not accepted by collectors of nihonto. I will not use it on my good blades but I don't yet regret using it on that blade. I am not recommending this, let me make that clear, becouse it is non-traditional and I was quite nervous about doing it. Well, so far so good. It's a shame about the fatal flaw, becouse other than that it is a nice blade. I thought about entering it for kantei-sho last August in San Francisco but I sure it would have been useless. Sorry, kind of got off topic. Anyway that is the most non-traditional thing that I have done to date.