If you're within return period (90 days for most things) then you will need to return the item and purchase the new tool or kit separately.
No they don't
No they dont sorry
They normally refund the price of the tool then you buy the combo kit. I bought a DeWalt screw gun as a gift a week later they had a combo kit for $20 more. I returned the original purchase and bought the combo.
No.
Not to my knowledge.
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