Moto G 4Gs at a discount
1. Go to Tescos (or other places presumably)
2. Buy the Tesco PAYG version which is often sold at a £30+ discount to the unlocked version
3. Unlock it by contacting your friendly unlocker on eBay for £1.50 or so
I have 5 of them as they're great value for money. Through Clubcard vouchers and the above, I've paid less than £100 for all of them.