Well, I played this all wrong... I thought when the P900 arrived the P800 would be on sale places and I'd grab a couple for backups (since I'm invested in that ink and have a few of them already). Well, now it seems like everyone is out of stock and on Amazon they're going for 2x the original retail price.
Anyone seen any in stock anywhere reputable? I tend to not like buying from anonymous/weird vendors I haven't heard of or someone can vouch for.