IMO, the bulls will be running on R2 for a very- VERY long time.
Virtually no chance of a re-hash for a little bot that is one of the most iconic characters of one of the most iconic films of all-time... and who's presence and popularity will only increase with the slew of SW films to come (in which- worth noting- He will be featured).
I would hypothesize this set goes well into the $1,000+ range, and faster than many would imagine. Again, just IMO.
Hold. Store, forget about, and hold. Even with the hoarding, long product run, and opportunity to acquire, the exceptional popularity and demand for this set will override the volume acquired by "folks like us".
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Additionally:
Both WVM and the SW AT-AT are virtually extinct at the retail level... both, as of this post, are currently available at MRSP @ amazon US.
Well worth a look.