You can definitely purchase a custom configured MacBook pro, however usually these orders are processed online and take 5 - 7 business days to arrive to the store, however if you're looking for a powerful alternative to what they have presented, they usually sometimes carry small quantities of fully specd out versions in store
I Think same like Andrés Vásquez. It culd be that you can customized in the store but I think that you have to pick up other day
I believe that you can customize the computer online. And next pick up this in the store... I don't sure
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