| Who handles the return | Staff at the counter | The customer, unsupervised |
| How the refund is issued | Manual, at the till | Automatic voucher, redeemed at checkout |
| Validation of containers | Staff check the barcode by eye | Machine scans and validates each item |
| Container handling | Checked, bagged, tagged and stored by staff | Machine compacts and stores ready for collection |
| Handling fee earned | 3p per container | 5p up to 225,000/yr, then 1.3p |
| Upfront cost | Minimal — bags, storage, signage | Lease or purchase, install, power, maintenance |
| Ongoing labour | Meaningful — every return is handled | Minimal — occasional top-ups and cleaning |
| Floor space needed | Storage area for bagged containers | Machine footprint plus access space |
| Customer experience | Queue at the counter | Self-service, available out of hours |
| Throughput ceiling | Limited by staffing | High, subject to machine capacity |
| Grant eligible | No | Yes — £6,000 per site for small independents |