JediJman - I can't remember if this has been discussed here or not - but the Spiderwoman wave, and supposedly the Variant wave has been found at the Disney Store. Currently on their website you can order Spiderwoman - but you would be taking a gamble on the paint apps for $12.50 shipped plus maybe tax.
I don't know how many of her you have seen at retail - I think when the wave first came out I saw 5 of her all at once at TRU and then never again. It took a while for me to figure out which had the best paint apps, they were all kinda iffy.