Resurrecting the discussion about checks (and cards). Our business primarily works for government agencies and paper everything is de rigueur. Before payments are made by these agencies they require certain forms be filled out, signed and returned. The amount could be $ 15,000 or it could be $ 5. Same paperwork either way. For amounts less than $ 10 I don't even bother sending an invoice any more because the steps required to get paid just take up too much time.
For the longest time government would only accept original documents sent through the snail mail. They wanted an "original signature" and it had to be in blue ink. Thankfully, all now accept scanned/emailed documents except one holdout. That guy still insists on snail mail copies of documents. I add a hidden nuisance fee to those invoices.