Pricing in Proportion
Letters | Large Letters | PacketsPricing in Proportion prices mail on the basis of its size as well as its weight. The pricing structure is split into three categories - Letters, Large Letters and Packets.
Letters

C5 or under. Up to 100g. Less than 5mm thick.
For example:
- Most letters
- Postcards
- Bills and statements
- Some brochures and catalogues
- Most greeting cards
5mm thick is the equivalent of 12 pieces of standard photocopies/A4 office printer paper folded in half in a C5 envelope.
| Weight | Isle of Man | UK & Channel Islands |
|---|---|---|
| Up to 100g | 32p | 33p |
Large Letters

C4 or under. Up to 750g. Less than 25mm thick
For example:
- Letters containing unfolded A4 paper
- Most brochures, catalogues and company reports
- CDs & DVDs
| Weight | Isle of Man, UK & Channel Islands |
|---|---|
| 0 - 100g | 50p |
| 101 - 250g | 88p |
| 251g - 500g | £1.21 |
| 501g - 750g | £1.73 |
Packets

More than 353mm long or 250mm wide. More than 25mm thick.
For example:
- Most books
- VHS cassettes
- Parts and samples
- Most cylindrical packages
5mm thick is the equivalent of 12 pieces of standard photocopies/A4 office printer paper folded in half in a C5 envelope.
| Weight | Isle of Man, UK & Channel Islands |
|---|---|
| Up to 100g | £1.00 |
| 101g - 250g | £1.58 |
| 251 - 500g | £2.09 |
| 501 - 750g | £2.58 |
| 751 - 1000g | £3.17 |
| 1001 - 1250g | £4.34 |
| 1251 - 1500g | £5.02 |
| 1501 - 1750g | £5.70 |
| 1751 - 2000g | £6.40 |
| Each additional 250g | 75p |
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