I was about to jump on this, thinking it was $10 for one. At $10 for 3, it's a steal.
I've owned other Stanley SS products, and they are marvelous. While I dislike the plug-style cap, BPA-free, SS bottles of this quality are hard to come by.
Even if you just want a BPA-free bottle, Tritan Nalgenes are about the same price for just one and Kleen Kanteens are about twice as much so it's a great, unadulterated deal.