Have seen the deal posted for 2 for £1. but twice i have been to my local store in Worthing. and they have scanned through at 98p each (not the £1.10 the labels says) but the system is still set up to Discount £1.20 therefore, buying 2 at £0.98 is £1.96 minus the £1.20 discount makes them only 76p for 2. This is happened to me twice in a few days.
Hope this helps.