The package includes the shop with petrol and diesel pumps, a restaurant/bar, three bedroom accommodation and a two-bedroom flat.
"We're not asking a hell of a lot, it's a very big property.
"It would be a good family business and could be expanded a bit."
The Trade Me ad invites inquires over $600,000.
"I hope someone will buy it and keep it open and carry on."
Mr Oakly said only a few people had shown any interest.
He was selling his shop "because I'm too bloody old".
The shop is open seven days a week and, at 75, Mr Oakly said he and his wife are ready to retire. "We are looking forward to having a bit of time to ourselves," he said. Castlepoint resident Anders Crofoot said it will be a shame to see the store close, but he can see "exactly where [Mr Oakly] is coming from".
"Rurally, it's getting harder and harder to survive."
Mr Crofoot said the capital value of the area had been driven up and returns for running a dairy weren't "flash".
"Years ago when roads weren't good it got a lot more patronage." He said one of the main problems was locals were not using the store as many commuted to Masterton on a regular basis.
Losing the petrol pumps will mean fishermen have to bring gas from out of town, and there will be nowhere to get coffee.
Mr Crofoot said the shop closure would have the biggest impact on holiday makers and day trippers.