| 13 Products | May 2023 | May 2024 | Change |
| Propercorn Perfectly Sweet Popcorn (90g) | £1.60 | £1.80 | + £0.20 12.5% increase |
| | £1.60 | £1.80 | + £0.20 12.5% increase |
| Propercorn Sweet & Salty Popcorn Multipack (14g) | £1.80 | £1.90 | + £0.10 5.6% increase |
| | £1.80 | £1.90 | + £0.10 5.6% increase |
| Propercorn Lightly Sea Salted Popcorn (20g) | £0.85 | £0.85 | £0.00 No change |
| | £0.85 | £0.85 | £0.00 No change |
| Propercorn Lightly Sea Salted Popcorn Sharing Bag (70g) | £1.80 | £1.90 | + £0.10 5.6% increase |
| | £1.80 | £1.90 | + £0.10 5.6% increase |
| Propercorn Caramelised Biscuit Popcorn (90g) | £1.60 | £1.60 | £0.00 No change |
| | £1.60 | £1.60 | £0.00 No change |
| PROPERCORN Proper Corn Sweet Popcorn (14g) | £1.79 | £1.79 | £0.00 No change |
| | £1.79 | £1.79 | £0.00 No change |
| Propercorn Lightly Sea Salted Popcorn Multipack (10g) | £1.80 | £1.90 | + £0.10 5.6% increase |
| | £1.80 | £1.90 | + £0.10 5.6% increase |
| PROPERCORN Peanut Butter & Almond Sharing Popcorn (90g) | £1.00 | £1.00 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| Propercorn Salted Caramel Popcorn (90g) | £1.80 | £1.90 | + £0.10 5.6% increase |
| | £1.80 | £1.90 | + £0.10 5.6% increase |
| Propercorn Sweet & Salty Popcorn (30g) | £1.00 | £1.00 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
