My meter seems to have lost the plot. Fasting reading was 5.8. 1.3/4 hrs. after usual breakfast reading was 4.8; another reading taken immediately after the previous one was 5.5! Went to Lloyds chemist to buy the solution needed to test meter and was told they didn't supply it and to contact the manufacturer. Has anyone else been able to buy from their chemist and is the product expensive?