Well, Natalya's would be the next logical step, I would say. Looking good, but you lack attackspeed from anything but inna's pants and your EF. Granted, EF is fast enough on its own, some additional speed from rings, amulet or gloves wouldn't hurt (unless you are doing this on purpose, of course). Also, the lack of movespeed on the boots really hurts.
Natalya's would fix both problems elegantly, as the boots have guaranteed ms and the ring always has as.
As for the build, no Blinding Flash:FitL? It would boost your damage a LOT considering the EF (even more if you add some attackspeed) and add to your SW snapshot (at least for now, the patch might fix this). For the current patch, I would take blind over heal anytime, its better offensively and if you need it in a pinch. Also, the evasion from Guardian's Path is not really worth the slot, if you don't go for backlash or something like that; if you need more defense, get Resolve instead (its better than the evasion anyway), otherwise Fleet of Foot to offset the lack of ms on your boots.
Value of your gear, no idea. Search for similar pieces in AH, halve the buyouts and you have a rough estimate
Didn't update her in a while. Don't mind the build, its a hybrid TR build to do keyruns a little faster. What would you upgrade next? Probably amulet and weapons? I had quite a hard time finding better ones for a reasonable price so far.