We tried refurb cartridges several years ago and it was terrible. Probably 25% failure rate, and several toner explosions. I hate printer troubleshooting anyway, so it isn't worth the pain to me.
They also told me that the source information was proprietary to the supplier so that they couldn't tell me exactly where it's from, just that it's not from China. I'd be okay with it being from China, at least then orangutans wouldn't have been murdered for it.