Why do some websites charge a fee for an internet transaction and others charge no fee if you will use the internet option?

The only fee I have ever seen is tax and shipping.

Most folks figure the cost of using the internet into the price of their goods. Others add it on at the time of the sale.

Those that include it in the price of goods, make a little extra when doing cash sales.

Many gas stations have a cash or debit with pin price and a higher price per gallon if you use a credit card.

It is basically up to the business to decide how they cover those expenses because the bank in going to get their cut regardless.

If you're talking banks, they suck.

My wife went to our bank but not the one she usually goes to. She wanted two rolls of quarters. She had to give them the account number and show her driver's license. For two rolls of quarters.

We took in a big coffee can of change to have deposited in an account. They charged 10% for throwing the change in to a machine.

I do not like banks or insurance companies.

Our county treasurer was going to add 2.75% for paying property taxes with a debit card. I went and got cash.
Local locker adds 3% for any card transaction.