I think it is ridiculous to be charging 20p extra per parcel when a customer takes their parcels to a post office (which for me is a 3-minute walk to my local shop so if I am going there anyway I may as well drop my package off as well) instead of wasting Royal Mails time and fuel to come to pick them up from me at an unspecified time the next day, which adds an extra day to the delivery time, IF they actually turn up (which in the past they haven't turned up to collect).