On: Cash payments above €3000 to be outlawed in Nether...

[Scarblac]

It costs some money to have a bank account, bank transfers don't have a fee associated with them. Card processing costs a small fee.

Cheaper than handling cash though.

[tomrod → Scarblac]

And those rates are increased when the system becomes more expensive, whether directly to bank fees or indirectly by taxpayer subsidizing.