I understand your perspective. Just to give you an idea, in order for your account to have this package for only £XXX per month, an O2 SIM is essentially needed and the cheapest O2 SIM we have here is £5 a month. Additionally, taking off the sim removes those extras such as speed boost and perks like O2 priority. No worries, it's completely fine if you don't use the O2 SIM. Simply keep it in to take advantage of the best price. The total cost is £XXX per month for both 24 months contracts. What do you think?