| Quantity | Currency | Price | Date | Source |
|---|---|---|---|---|
| pack of 20 | GBP | 6.00 | 2010-02-16 | |
| pack of 20 | GBP | 8.80 | 2014-10-18 | |
| pack of 20 | GBP | 8.96 | 2015-05-29 | |
| pack of 20 | GBP | 9.23 | 2015-10-30 | based on 100s pack |
| pack of 20 | GBP | 9.72 | 2016-10-07 | based on 100s pack |
| pack of 20 | GBP | 10.33 | 2017-11-03 | based on 100s pack |
| pack of 20 | GBP | 11.33 | 2018-11-02 | based on 100s pack, Tesco online |
| pack of 20 | GBP | 12.00 | 2019-11-02 | based on 100s pack, Waitrose online |
| pack of 20 | GBP | 12.92 | 2020-10-30 | based on 100s pack, Waitrose online |
| pack of 20 | GBP | 13.25 | 2021-10-29 | based on 100s pack, Sainsbury's online |
| pack of 20 | GBP | 14.05 | 2022-12-03 | based on 100s pack, Sainsbury's online |
| pack of 20 | GBP | 15.95 | 2023-10-28 | based on 100s pack, Sainsbury's online |
| pack of 20 | GBP | 17.55 | 2024-10-30 | based on 100s pack, Sainsbury's online |
Used to calculate savings.