| 9 Products | May 2023 | May 2024 | Change |
| Guylian Belgian Chocolate Sea Shells (250g) | £6.00 | £6.50 | + £0.50 8.3% increase |
| | £6.00 | £6.50 | + £0.50 8.3% increase |
| Guylian Belgian Chocolates The Original Seashells (500g) | £11.00 | £11.00 | £0.00 No change |
| | £11.00 | £11.00 | £0.00 No change |
| Guylian Seashells Box (500g) | £9.25 | £10.00 | + £0.75 8.1% increase |
| | £9.25 | £10.00 | + £0.75 8.1% increase |
| Guylian Chocolate Sea Horses (42g) | £0.85 | £0.85 | £0.00 No change |
| | £0.85 | £0.85 | £0.00 No change |
| Guylian The Original Seashells Chocolate Box (375g) | £8.00 | £8.00 | £0.00 No change |
| | £8.00 | £8.00 | £0.00 No change |
| | £6.88 | £12.00 | + £5.12 74.4% increase |
| | £6.88 | £12.00 | + £5.12 74.4% increase |
| Guylian Belgian Deluxe Assortment (369g) | £6.88 | £12.00 | + £5.12 74.4% increase |
| | £6.88 | £12.00 | + £5.12 74.4% increase |
| Guylian Seashells Box (500g) | £10.00 | £10.00 | £0.00 No change |
| | £10.00 | £10.00 | £0.00 No change |
| Guylian The Original Seashells Boxed Chocolates with Hazelnut Praline Filling (65g) | £1.55 | £1.60 | + £0.05 3.2% increase |
| | £1.55 | £1.60 | + £0.05 3.2% increase |
