| 14 Products | Sep 2024 | Sep 2025 | Change |
| Guylian Belgian Chocolate Sea Shells (250g) | £6.64 | £8.60 | + £1.96 29.5% increase |
| | £6.25 | £7.48 | + £1.23 19.7% increase |
| | £6.50 | £7.50 | + £1.00 17.4% increase |
| | £5.50 | £7.50 | + £2.00 23.2% increase |
| | £6.25 | £7.50 | + £1.25 22.3% increase |
| | £4.50 | £8.25 | + £3.75 31.9% increase |
| | £6.50 | £7.50 | + £1.00 28.7% increase |
| | £10.95 | £14.46 | + £3.51 29.5% increase |
| | £8.13 | £8.25 | + £0.12 1.5% increase |
| | £12.50 | £13.00 | + £0.50 4% increase |
| | £5.00 | £5.00 | £0.00 2.9% increase |
| | £5.00 | £5.00 | £0.00 2.3% increase |
| | £10.00 | £10.00 | £0.00 1.5% increase |
| Guylian The Original Seashells Boxed Chocolates with Hazelnut Praline Filling (65g) | £3.65 | £3.71 | + £0.06 1.6% increase |
| | £1.75 | £1.98 | + £0.23 13.1% increase |
| | £1.60 | £1.60 | £0.00 6.5% increase |
| | £1.25 | £1.25 | £0.00 5.2% increase |
| | £9.99 | £9.99 | £0.00 1.6% increase |
| Guylian Belgian Chocolates The Original Seashells (500g) | £11.00 | £14.17 | + £3.17 28.8% increase |
| | £11.00 | £14.00 | + £3.00 27.3% increase |
| | £11.00 | £14.50 | + £3.50 29.5% increase |
| | £11.00 | £14.00 | + £3.00 28.8% increase |
| Guylian Dark Praline Seashells (225g) | £6.08 | £6.83 | + £0.75 12.3% increase |
| | £6.25 | £7.48 | + £1.23 19.7% increase |
| | £5.50 | £5.50 | £0.00 10.4% increase |
| | £6.50 | £7.50 | + £1.00 12.3% increase |
| | £10.00 | £12.00 | + £2.00 20% increase |
| | £10.00 | £14.00 | + £4.00 40% increase |
| | £10.00 | £10.00 | £0.00 20% increase |
| Guylian Temptations Assortment Carton About 20 Single Wrapped Chocolates (200g) | £5.75 | £6.99 | + £1.24 21.6% increase |
| | £5.75 | £6.98 | + £1.23 21.4% increase |
| | £5.75 | £7.00 | + £1.25 21.6% increase |
| Guylian No Added Sugar Milk Bars (100g) | £2.25 | £2.25 | £0.00 No change |
| | £2.49 | £2.49 | £0.00 No change |
| | £2.00 | £2.00 | £0.00 No change |
| Guylian Salted Caramel Bars (100g) | £14.34 | £14.76 | + £0.42 2.9% increase |
| | £3.15 | £4.00 | + £0.85 27% increase |
| | £25.52 | £25.52 | £0.00 2.9% increase |
| Guylian Hazelnut Bars (100g) | £1.60 | £1.60 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| | £1.70 | £1.70 | £0.00 No change |
