Buyer is paying 18:45 USD worth of bitcoin 0.0234 for 25USD worth of iTunes Gift Card Code.
00.0234 bitcoins (18.16 USD) are now in escrow. It is safe for the buyer to pay now. The buyer has 30 minutes to make payment before the trade expires. Once the buyer has made payment they should click the "I have paid the seller as requested" button and the trade will not expire.