To see my suggestion, and to leave one of your own,
I love that rug, too! (See how much I love it in this post.) If you live in a larger city, I'd suggest keeping an eye on Craigslist for the taksim rug, by searching for "West Elm Rug" regularly. I'd also look on eBay: I've actually seen a taksim rug on eBay in the past, so there's a chance you can find exactly what you're looking for there!
If that doesn't work, try this Eads Area Rug ($300) from Home Decorators, which is a close match.
Does anyone else have any suggestions for lattice-print rugs? Please comment below! And be sure to join the Assisted Living group!