Have a couple of questions on the blade exchange, and was directed here to ask. I would like to trade for two Gillette Rubie blades. Blade exchange page says to go to wiki to see blades available and select. No Rubie listed in the wiki. But on the blade exchange page, someone is sending in some Rubies to trade. Now what? Go ahead and request, but where? And what happens if I send in some Nacets, for example, and the Rubies are gone? Thanks!