“Now” brings pharmacy products in roughly 30 minutes, subject to your location and the time slots available. The fee varies with order value, timing and location and is displayed before payment. Payment has to be made online upfront, as the service does not take cash on delivery, and an order cannot be edited or cancelled after it is placed.
Should delivery take longer than 45 minutes (half an hour, plus 15 minutes' grace), you can reclaim the “Now” fee via the app's refund button, as long as you do so no more than 48 hours after the delivery time. It comes back to your Nahdi wallet as a single-use voucher that lasts 30 days.
No refund is given for an order that arrived inside 45 minutes, one that was postponed or cancelled, or one you were not present to receive.
Source: Nahdi Pharmacy: Delivery information