Caveat Emptor those ebay starter relays. I have been through several in very short periods of time - days, weeks, months on other Jap bikes. The Honda relay is about $30; and should prolly last another 15 years.
Also, some of the clones have a different wiring configuration, which means you have to pull and re-insert some of the spade connectors inside the plastic housing on your harness. Easy peasy (most of the time) if you have the special little tool - sometimes a pita.
While free shipping with some of the cheapo stuff is great, who wants to be shipped a free turd?

YMMV, of course.