A DIY retailer has experimented with changing the prices of various tools sold in their store. The table below shows the price of each tool in two years.
|
Year 1 |
Year 2 |
| Hammers |
£8 |
£9 |
| Screwdrivers |
£5 |
£4 |
| Drills |
£45 |
£50 |
| Paintbrushes |
£3.50 |
£3.00 |
Other things being equal, which one of the following changes from Year 1 to Year 2 is the retailer most likely to experience?