| 8 Products | May 2023 | May 2024 | Change |
| Princes Mackerel Sizzle Rich Tomato & Herbs (160g) | £1.79 | £1.83 | + £0.04 2.2% increase |
| | £1.70 | £1.90 | + £0.20 11.8% increase |
| | £1.99 | £1.99 | £0.00 5.4% increase |
| | £1.75 | £1.75 | £0.00 3.9% increase |
| | £1.50 | £1.50 | £0.00 2.9% increase |
| | £2.00 | £2.00 | £0.00 2.2% increase |
| Princes Mackerel Fillets in Tomato Sauce (125g) | £1.32 | £1.38 | + £0.06 4.5% increase |
| | £1.25 | £1.75 | + £0.50 40% increase |
| | £1.55 | £1.60 | + £0.05 20% increase |
| | £1.25 | £1.19 | - £0.06 11.9% decrease |
| | £1.24 | £0.99 | - £0.25 4.5% decrease |
| Princes Mackerel Spicy Fajita & Lime (160g) | £1.80 | £2.10 | + £0.30 16.7% increase |
| | £1.99 | £1.99 | £0.00 No change |
| | £0.31 | £0.31 | £0.00 No change |
| | £3.09 | £4.01 | + £0.92 16.7% increase |
| Princes Mackerel Fillets in Spicy Tomato Sauce (125g) | £1.30 | £1.48 | + £0.18 13.8% increase |
| | £1.25 | £1.75 | + £0.50 40% increase |
| | £1.10 | £1.10 | £0.00 21.2% increase |
| | £1.55 | £1.60 | + £0.05 13.8% increase |
| Princes Mackerel Fillets in Mustard Sauce (125g) | £1.53 | £1.68 | + £0.15 9.8% increase |
| | £1.50 | £1.75 | + £0.25 16.7% increase |
| | £1.55 | £1.60 | + £0.05 9.8% increase |
| Princes Mackerel Spicy Smoked Salsa (125g) | £1.13 | £1.13 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| | £1.25 | £1.25 | £0.00 No change |
| Princes Mackerel Fillets Olive Oil (125g) | £1.55 | £1.60 | + £0.05 3.2% increase |
| | £1.55 | £1.60 | + £0.05 3.2% increase |
| Princes Mackerel Fillets Sunflower Oil (125g) | £1.55 | £1.60 | + £0.05 3.2% increase |
| | £1.55 | £1.60 | + £0.05 3.2% increase |
