The $10, I 100% believe, is specialty packaging... Not the figure itself.
The articulation's considered a "fixed cost" on the overall product, while "limited edition" short-run packaging is a variable cost. Over the long-haul, both can be lessened should more be produced, but the packaging is supposedly not goiong to be reproduced after this series' first (and thus only) run. The articulation, should the figure(s) see re-release someday in any format, will be a cost that diminishes over time...
I like to think Hasbro wise enough that, if they're to re-release a Han ANH someday or ANH Leia, that they use these sculpts... Of course, what's logical and what actually is to occur tend to vary greatly.
The Han and Leia are, without a doubt, the best of both versions. Neither figure's perfect though.... Han's damned close though. I'd say closer than the Clone even, which wowed me bigtime.
Deluxe Durge is up in that running as well. A truly amazing piece of work...
The packaging on the VOTC arguably increases this to $10 value, depending on how you view the paradox of value for yourself, but it certainly is costing Hasbro more to do this "special" packaging. I just wish we weren't paying for it.
I think the Basic OTC card is miles better myself.