I just picked up a DC Direct Harley Quinn (circle base) for 150 usd - there was a good bidding war on it, so I'm very pleased with my pickup.
It was a no brainer between the WB Version and the DC - while I like how the eyes are done with the WB version but the DC edition captures the character better by having the hat completed instead of ending her hat in red and black.
Also good website to kinda have an idea as to what value statues or comics are going for
http://www.comicsvalue.com/index.php
Cheers.
Oh, recent value of both statues is 350 usd and above.