| 16 Products | May 2025 | May 2026 | Change |
| Harpic Limescale Remover Toilet Cleaner (750ml) | £3.67 | £1.69 | - £1.98 -54% decrease |
| | £1.00 | £1.64 | + £0.64 64% increase |
| | £1.50 | £1.65 | + £0.15 32% increase |
| | £1.05 | £1.65 | + £0.60 39.8% increase |
| | £1.50 | £1.65 | + £0.15 31% increase |
| | £1.30 | £1.30 | £0.00 24.4% increase |
| | £2.00 | £2.30 | + £0.30 22.3% increase |
| | £2.00 | £1.65 | - £0.35 14.2% decrease |
| | £18.99 | £1.64 | - £17.35 -54% decrease |
| Harpic Power Plus Regular Toilet Cleaner 8 Tablets () | £2.87 | £2.87 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| | £2.00 | £2.00 | £0.00 No change |
| | £2.00 | £2.00 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| | £1.99 | £1.99 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| Harpic Active Fresh Toilet Cleaner Gel Pine Scent (750ml) | £1.44 | £1.42 | - £0.02 -1.4% decrease |
| | £1.30 | £1.20 | - £0.10 -7.7% decrease |
| | £1.20 | £1.20 | £0.00 -4% increase |
| | £1.25 | £1.30 | + £0.05 -1.6% increase |
| | £1.25 | £1.30 | + £0.05 No change |
| | £2.35 | £2.35 | £0.00 No change |
| | £1.50 | £1.55 | + £0.05 No change |
| | £1.19 | £1.19 | £0.00 0.7% increase |
| | £1.50 | £1.30 | - £0.20 -1.4% decrease |
| Harpic Active Fresh 6 Rim Block Citrus Toilet Cleaner () | £2.31 | £2.31 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £2.30 | £2.30 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £4.47 | £4.47 | £0.00 No change |
| Harpic White & Shine Bleach Citrus Toilet Cleaner Gel (750ml) | £1.93 | £1.94 | + £0.01 0.5% increase |
| | £0.99 | £0.99 | £0.00 No change |
| | £1.05 | £1.05 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| | £1.60 | £1.65 | + £0.05 0.8% increase |
| | £2.10 | £2.10 | £0.00 0.7% increase |
| | £4.36 | £4.36 | £0.00 0.5% increase |
| Harpic Power Plus Max Citrus Fresh Toilet Cleaner Gel (750ml) | £1.78 | £1.74 | - £0.04 -2.2% decrease |
| | £1.57 | £1.45 | - £0.12 -7.6% decrease |
| | £1.55 | £1.45 | - £0.10 -7.1% decrease |
| | £1.95 | £1.95 | £0.00 -4.1% increase |
| | £1.50 | £1.65 | + £0.15 -0.6% increase |
| | £2.10 | £2.30 | + £0.20 1.7% increase |
| | £2.00 | £1.65 | - £0.35 -2.2% decrease |
| Harpic Power Plus Toilet Cleaner Gel Original Scent (750ml) | £1.58 | £1.63 | + £0.05 3.2% increase |
| | £1.57 | £1.45 | - £0.12 -7.6% decrease |
| | £1.30 | £1.45 | + £0.15 0.7% increase |
| | £1.60 | £1.65 | + £0.05 2% increase |
| | £1.50 | £1.65 | + £0.15 4% increase |
| | £1.95 | £1.95 | £0.00 3.2% increase |
| Harpic Active Fresh 6 Rim Block Lavender Toilet Cleaner (40g) | £1.74 | £1.74 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| Harpic PowerPlus Citrus Active Tablets () | £3.10 | £3.10 | £0.00 No change |
| | £2.50 | £2.50 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
| Harpic Active Blue Water 6 Powers Atlantic Burst (39g) | £1.85 | £1.85 | £0.00 No change |
| | £1.68 | £1.68 | £0.00 No change |
| | £2.60 | £2.60 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| | £2.10 | £2.10 | £0.00 No change |
