There's and old school of thought that says Fuji is better in the green range and that Kodak gives more saturation in the red range. I'm not sure how much difference there is these days, however the processing will make a difference. I used to do the Walmart, RiteAid developing and save a buck or two. It was strange that the enlargements I had done at a color lab always came out so different than the originals. Then I finally figured it out. Color lab has people that just develop pics, Walmart/Walgreens, only do that after high school lets out for the day and do it in between stocking shelves.
Is it worth the extra money? Only you can decide.
Randy