Hi Iris - finally getting around to responding to this... I've been using Avios for a few years. Not so much since Supervalu stopped their partnership with them. But still use them to collect pts when I can. Depending on the merchant it can take either a few days or weeks for points to arrive. The points below are roughly the Avios points required to book a flight to London. I'd recommend as long as it doesn't incentivise you to buy stuff that you wouldn't otherwise buy :)