| 7 Products | May 2025 | May 2026 | Change |
| Calgon 4-in-1 Washing Machine Water Softener Limescale Protection Gel (750ml) | £7.01 | £5.96 | - £1.05 -15% decrease |
| | £5.00 | £5.00 | £0.00 No change |
| | £7.00 | £7.00 | £0.00 No change |
| | £7.00 | £7.00 | £0.00 No change |
| | £6.25 | £4.90 | - £1.35 -5.2% decrease |
| | £7.35 | £7.35 | £0.00 -4.1% increase |
| | £7.00 | £5.00 | - £2.00 -8.5% decrease |
| | £9.99 | £4.90 | - £5.09 -16.9% decrease |
| | £6.49 | £6.49 | £0.00 -15% increase |
| Calgon 4-in-1 Washing Machine Cleaner Tablets () | £14.02 | £12.31 | - £1.71 -12.2% decrease |
| | £16.00 | £15.98 | - £0.02 -0.1% decrease |
| | £12.00 | £12.00 | £0.00 -0.1% increase |
| | £16.00 | £16.00 | £0.00 -0.1% increase |
| | £9.00 | £9.00 | £0.00 No change |
| | £10.35 | £10.35 | £0.00 No change |
| | £21.00 | £12.00 | - £9.00 -10.7% decrease |
| | £13.78 | £10.85 | - £2.93 -12.2% decrease |
| Calgon Hygiene Tabs Water Softener () | £5.80 | £5.41 | - £0.39 -6.7% decrease |
| | £4.25 | £4.25 | £0.00 No change |
| | £4.00 | £4.00 | £0.00 No change |
| | £6.00 | £4.00 | - £2.00 -14.1% decrease |
| | £8.95 | £9.39 | + £0.44 -6.7% increase |
| Calgon Hygiene Plus Washing Machine Water Softener () | £14.00 | £15.17 | + £1.17 8.4% increase |
| | £12.00 | £12.00 | £0.00 No change |
| | £15.50 | £15.50 | £0.00 No change |
| | £14.50 | £18.00 | + £3.50 8.4% increase |
| Calgon 4-in-1 Washing Machine Water Softener Tablets () | £21.47 | £19.50 | - £1.97 -9.2% decrease |
| | £22.00 | £25.00 | + £3.00 13.6% increase |
| | £20.93 | £13.99 | - £6.94 -9.2% decrease |
| Calgon Hygiene Tabs Water Softener () | £22.69 | £16.75 | - £5.94 -26.2% decrease |
| | £25.50 | £17.00 | - £8.50 -33.3% decrease |
| | £19.87 | £16.49 | - £3.38 -26.2% decrease |
| Calgon washing machine cleaner tablets limescale protection 45 tablets () | £12.40 | £16.00 | + £3.60 29% increase |
| | £12.40 | £16.00 | + £3.60 29% increase |
