| 15 Products | May 2023 | May 2024 | Change |
| Harpic Limescale Remover Toilet Cleaner (750ml) | £1.50 | £2.35 | + £0.85 56.7% increase |
| | £1.50 | £2.35 | + £0.85 56.7% increase |
| Harpic Power Plus Regular Toilet Cleaner 8 Tablets () | £3.25 | £3.50 | + £0.25 7.7% increase |
| | £3.25 | £3.50 | + £0.25 7.7% increase |
| Harpic Sparkling Citrus (35g) | £2.50 | £2.50 | £0.00 No change |
| | £2.50 | £2.50 | £0.00 No change |
| Harpic White & Shine Bleach Citrus Toilet Cleaner Gel (750ml) | £1.70 | £2.10 | + £0.40 23.5% increase |
| | £1.70 | £2.10 | + £0.40 23.5% increase |
| Harpic Fresh Power 6 Rim Block Bleach Lime Fresh Toilet Cleaner (39g) | £2.60 | £2.10 | - £0.50 -19.2% decrease |
| | £2.60 | £2.10 | - £0.50 -19.2% decrease |
| Harpic Active Fresh Toilet Cleaner Gel Pine Scent (750ml) | £1.50 | £1.50 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| Harpic White & Shine Bleach Eucalyptus Scent Toilet Cleaner Gel (750ml) | £1.25 | £1.25 | £0.00 No change |
| | £1.25 | £1.25 | £0.00 No change |
| Harpic Active Fresh 6 Rim Block Citrus Toilet Cleaner (40g) | £1.80 | £1.50 | - £0.30 -16.7% decrease |
| | £1.80 | £1.50 | - £0.30 -16.7% decrease |
| Harpic Active Fresh 6 Rim Block Lavender Toilet Cleaner (40g) | £1.80 | £1.50 | - £0.30 -16.7% decrease |
| | £1.80 | £1.50 | - £0.30 -16.7% decrease |
| Harpic Active Blue Water 6 Powers Atlantic Burst (35g) | £2.65 | £2.10 | - £0.55 -20.8% decrease |
| | £2.65 | £2.10 | - £0.55 -20.8% decrease |
