" You have to pay for it online with a credit card."
‘get it sent’ differs depending on context.
‘Get it sent.’ as a statement to someone means ‘go and send it’ or ‘send it now’, almost with an undertone of ‘hurry up, what are you waiting for’.
‘…get it sent…’ In terms of ‘If you order online, you will need to get it sent to a registered address.’ for example just means that you will need to have something delivered to somewhere.
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