I just put the same items into an order on eat24.com, which is how I'd normally do this. The order came to $30.38, which is exactly $2 less than what Magic quoted. That's before you have the opportunity to add a tip.

So either the Magic surcharge was $2 and they tipped $0, or they tipped $2 and were doing some free introductory thing. ($2 off coupons for eat24 are also plentiful, so I guess Magic could have also made $4.)