good stuff, and good to see some nice animations. Nice job on the IK handles for the legs, the run cycles has the right snapping and pivots in the hips.

PS. $5.99 for 5 models fully animated and skinned is far to low of a price, you could get alot more, and still be reasonable. I firmly suggest you bump up your price to 10.99 or a few dollars more. The quality of the models, animations, and skins suggest you put at least a good amount of work into them.

PSS. If your going to sell animated character models like that, then I would suggest that you allow them to be commercially used, or your sales will be low. Most people who purchase cheap models are low budget, and looking for a cost-effective solution for a "commercial" hopeful project. You will probably triple your sales or more, by giving your buyer full usage privelages, or they will just goto something like TheGameCreators.com and get it.