i think i deciphered the difference between the vaterra models. it seems the 's' is the american bodied models and the 'c' is the nissan bodies,

now, a better question is why the hell does the e10 cost the same as the other 2 in your area. to my knowledge we dont have the mavrick here in the US but it looks quite decent, the e10, on the other hand, doesnt have a very good reputation. i'm not an onroad person (at this time, anyway) so any advice i could give would be purely second hand.