> dash cam paid for itself

FTFY.

Although payed exists (the reason why autocorrection didn't help you), it is only correct in:

• Nautical context, when it means to paint a surface, or to cover with something like tar or resin in order to make it waterproof or corrosion-resistant. The deck is yet to be payed.

• Payed out when letting strings, cables or ropes out, by slacking them. The rope is payed out! You can pull now.

Unfortunately, I was unable to find nautical or rope-related words in your comment.

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