Like think about it: You give extra money to the store so they can then ransom that loving money to you so you bring them scrap metal for free.
Like no matter what you do you always lose money to the core charge, you either don't return the old part and lose your deposit or you return the part and only get back the money you gave them while also losing money by giving them the scrap/travel expense.
This also leads to situations where you can't fix your old parts. I wanted to fix my old starter as it appeared the only issue was that the very accessible copper wire split but I couldn't because I wanted my core deposit back.
