Can't comment on the pricing or availability of running boards, however just wanted to throw my two cents. If you're looking at the "looks" over function, I like the look of sliders against any running board, any day. If you need the step, perhaps even take a look at the nfabs. Plenty of pictures with various sliders that look excellent, however they may be a bit more then you are looking to spend.
Again, nothing against running boards as they serve a purpose, however I don't think looks is one. If I had kids or others that needed help to get in I may think differently.