I think it's an acceptable price. I mean, it's obviously a high price, but these two characters are just so iconic.
Also, you are still getting TWO statues. If you are getting the Regular version, I realize that they share a single base, but still, it is two individual statues.
I don't know how much light-up features matter in these cases, but I can only imagine that it also adds to the price.
For some reason, I have an idea that the shiny finish of C-3PO also might add to the price. I'm not basing this on anything particular, but the recent cancellation of the Special Edition C-3PO Life-Size bust does at least indicate that doing a shiny surface is different, and more demanding, that the average surface. I think this persists as a factor even though we are talking about a weathered look.
Basically, I find that they are worth the price.