So In-N-Out may be higher quality but it's certainly no cheaper. McDonald's is 3.00 plus tax for the stuff you mentioned. The McDonald's I live near gives out the small cups for free, so I pay $2.00 for a McDouble and fries. I think that all McDonald's are obligated to give you a cup of "water" (which you can fill with anything) for free.
Besides, I think that I said in my original post, that if such a company existed they were not nearly as efficient. McDonald's, BK, and Wendy's are all much more popular than In-N-Out, so arguably In-N-Out is not nearly as efficient.
A McDouble doesn't compare. Stop pulling from Rassah's uninformed playbook.