A piece of ERM only costs 3.49€ ( VAT excluded) while a piece of paper RMAR on paper can cost from 4.77€ up to 13.39€ (VAT excluded). The lowest price for mail on a single page and sent within France.
To that, you need to add indirect costs :
- time spent stamping letters
- the cost of envelopes, paper, ink and stamps
- the cost of using copy machines and stamping machines
- archiving costs
- time spent managing and accessing the archives