| 11 Products | May 2025 | May 2026 | Change |
| Guylian Belgian Chocolate Sea Shells (250g) | £7.04 | £7.54 | + £0.50 7.1% increase |
| | £7.48 | £7.47 | - £0.01 -0.1% decrease |
| | £7.50 | £7.50 | £0.00 No change |
| | £5.50 | £7.50 | + £2.00 9.7% increase |
| | £7.50 | £7.50 | £0.00 7% increase |
| | £8.25 | £7.75 | - £0.50 4% decrease |
| | £6.00 | £7.50 | + £1.50 7.1% increase |
| | £8.25 | £8.50 | + £0.25 3% increase |
| | £13.00 | £14.00 | + £1.00 7.7% increase |
| | £5.00 | £5.00 | £0.00 5.6% increase |
| | £5.00 | £5.00 | £0.00 4.3% increase |
| | £10.00 | £10.00 | £0.00 3% increase |
| Guylian Belgian Chocolates The Original Seashells (500g) | £12.33 | £14.17 | + £1.84 14.9% increase |
| | £14.00 | £14.00 | £0.00 No change |
| | £12.00 | £14.50 | + £2.50 9.6% increase |
| | £11.00 | £14.00 | + £3.00 14.9% increase |
| | £10.00 | £14.00 | + £4.00 40% increase |
| | £10.00 | £14.00 | + £4.00 40% increase |
| | £10.00 | £14.00 | + £4.00 40% increase |
| Guylian No Added Sugar Milk Bars (100g) | £2.25 | £3.25 | + £1.00 44.4% increase |
| | £2.49 | £2.49 | £0.00 No change |
| | £2.00 | £4.00 | + £2.00 44.4% 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 |
| Guylian Master's Selection (200g) | £8.00 | £8.00 | £0.00 No change |
| | £8.00 | £8.00 | £0.00 No change |
| Guylian Chocolate Sea Horses (42g) | £0.85 | £0.85 | £0.00 No change |
| | £0.85 | £0.85 | £0.00 No change |
| Guylian Salted Caramel Bars (100g) | £4.00 | £4.00 | £0.00 No change |
| | £4.00 | £4.00 | £0.00 No change |
| Guylian Belgian Deluxe Assortment () | £13.00 | £14.00 | + £1.00 7.7% increase |
| | £13.00 | £14.00 | + £1.00 7.7% increase |
