| 8 Products | May 2023 | May 2024 | Change |
| Grumpy Mule Organic Colombia Ground Coffee (227g) | £6.38 | £6.37 | - £0.01 -0.2% decrease |
| | £8.64 | £6.64 | - £2.00 -23.1% decrease |
| | £4.95 | £5.50 | + £0.55 -10.7% increase |
| | £5.50 | £5.50 | £0.00 -7.5% increase |
| | £8.33 | £9.73 | + £1.40 -0.3% increase |
| | £4.49 | £4.49 | £0.00 -0.2% increase |
| Grumpy Mule Organic Sumatra Ground Coffee (227g) | £5.90 | £6.21 | + £0.31 5.3% increase |
| | £5.50 | £6.65 | + £1.15 20.9% increase |
| | £5.50 | £5.50 | £0.00 10.5% increase |
| | £5.50 | £5.50 | £0.00 6.9% increase |
| | £8.51 | £8.93 | + £0.42 6.4% increase |
| | £4.49 | £4.49 | £0.00 5.3% increase |
| Grumpy Mule Organic Sumatra Coffee Beans (227g) | £5.45 | £5.87 | + £0.42 7.7% increase |
| | £5.50 | £4.50 | - £1.00 -18.2% decrease |
| | £5.50 | £4.50 | - £1.00 -18.2% decrease |
| | £6.29 | £9.98 | + £3.69 9.9% increase |
| | £4.49 | £4.49 | £0.00 7.7% increase |
| Grumpy Mule Organic Peru Ground Coffee (227g) | £5.63 | £6.54 | + £0.91 16.2% increase |
| | £5.50 | £5.50 | £0.00 No change |
| | £4.95 | £7.18 | + £2.23 21.2% increase |
| | £8.32 | £9.73 | + £1.41 19.3% increase |
| | £3.75 | £3.75 | £0.00 16.2% increase |
| Grumpy Mule Organic Seasonal Swiss Water Decaff Ground Coffee (227g) | £7.16 | £6.72 | - £0.44 -6.1% decrease |
| | £9.07 | £9.47 | + £0.40 4.4% increase |
| | £6.20 | £4.50 | - £1.70 -8.5% decrease |
| | £6.20 | £6.20 | £0.00 -6.1% increase |
| Grumpy Mule Landscape Coffee Beans (500g) | £11.00 | £11.00 | £0.00 No change |
| | £11.00 | £11.00 | £0.00 No change |
| Grumpy Mule Organic Shakisso Ground Coffee (227g) | £5.50 | £5.50 | £0.00 No change |
| | £5.50 | £5.50 | £0.00 No change |
| Grumpy Mule Peru Coffee Beans (500g) | £11.00 | £11.00 | £0.00 No change |
| | £11.00 | £11.00 | £0.00 No change |
