There is no place where you can buy an all in one box set that has all of part one of naruto. At least not legitimately.
Even the biggest sets only have like 25 episodes at a time and are just a collection of earlier 12 or 13 episode sets.
To get everything with out the filler you either need the original 10 set releases like I have or the or the seasons sets from Season one part 1 & 2, Season 2 part 1 & 2 and Season 3 part 1. These can be had for $30 each at http://www.rightstuf.com and you won't find them for much cheaper then that.
I would advise skipping Season 3 part 2 and Season 4 part 1 & 2 since those are pure filler which was utterly terrible. Plus they cost $7 more then the previous seasons to boot which is ultra lame.