Money-back Guarantee

A few days ago Cido gave Megan and Reznor $10.00 each for their piggy banks. Last night Megan tossed a dish into the sink and it broke. Cido told her she'd have to pay for it.

Megan: how much, Cido?

Cido: ten dollars from your piggy bank.

Megan: so... you want your money back?