Merchant Facilities

Was out on the weekend with my wife, it was suggested that for lunch, we go to a nice vegetarian eatery in a plant nursery at one of Adelaide’s beach side suburbs.
What can I say, the meal was fantastic, followed by coffee and cake. All a very enjoyable experience, until… time to pay, oh no, they don’t have a merchant facility, they only accept cash. So across the road I run to the services station to get some cash out to pay the bill. So will I go back….. maybe if I have the cash in my pocket. My wife was told, while she was waiting for me, by the owner that it is not cost effective to have a merchant facility.
So what does a merchant facility cost, they normally have a flat monthly fee of say $25, and a transaction fee of up to 2% for credit and up to 1% for EFTPOS (these are only estimates)
For for the business to say that it is not cost effective, then one would assume they have no costs in going to the bank, sorting the cash and cheques to be banked and the potential of lost clients (like me who eftpos 95% of my transactions) is nil, or is it.
I have staff that fill out my deposit forms, tallies the cash and cheques and then travels to the bank, stands in a queue and then comes back. Wages and on-costs would be $25 per hour. But hang on, I could go to the bank myself, but that would not be a good idea as my time in my business is worth more than $25 per hour.
So if the above business feels that it is not cost effective to have a merchant facility, then they don’t have staff that does the banking or…. they don’t put a value on their time in the business.
So is it cost effective, to have a merchant facilities or not?