No fees? No worries.
You mentioned you were concerned with fees. Good news! By selecting the Top Up payment method (rather than Pay As You Go), you will not incur any fees while ordering through Hey You. There is no Service, Amex or Paypal fees with this feature, and you'll have fewer transactions to keep tabs on each month on your bank statements.
How to Set Up Top-Up:
1. Go to Menu > Payment in the app
2. Under "Select Method" choose Manual or Auto Top Up (either works)
3. Enter an amount, save and you're done!
Note that depending on the action you take here, your payment source may be debited immediately.