Of course, except it's just incremental upgrades as you go no matter what color the item is. Eventually they're all blue, then purple, but it's still just an incremental upgrade from the last town's most expensive planar stuff and it's just barely over what you'd get from participating in super-major zone events constantly. It's def better than quest gear, though, and worth the trouble of constantly messing with rifts to get for the most part.
The faction-planar stuff (back in the capitol town) is all a bit different but the choice stuff there is recipes and such.
Every new town also requires its own zone's shard/crystals, but the planarite carries over at least.
Always check for black-on-black text.