Mr Sharp said barbecues, fireplaces, outdoor equipment and fishing gear were left untouched and "they grabbed the clothing because it's close to Christmas".
"It's hunting clothing so it's fairly high value sort of stuff."
This was the first time the store, in its current location, had been broken into but the shop's previous premise at Greytown's northern end had been burgled before.
"You put all the security precautions in place but they only really stop honest people.
"To say it's frustrating would be an understatement."
Mr Sharp said these days factoring in the chance of a burglary occurring was "just a part of doing business".
"It's a case of not if it's going to happen it's a case of when.
"You can't let it get you down because it's a factor of life."
Hopefully the people who had committed the crime would be caught and held accountable, Mr Sharp said.
"We'll get the window replaced that they smashed and hoover up all the broken glass and get back on the horse.
"If you let it all climb on top of you life gets pretty depressing."
The break-in comes after two other burglaries in Greytown were reported on Monday.
A John Deere ride-on lawnmower was stolen from a locked and padlocked shed at commercial premises on Hospital Rd.
On Kuratawhiti St, the front door to an empty flat was smashed open and an internal door broken, with the burglars accessing an adjacent semi-detached house, where a flat screen television, loose change and possibly jewellery was taken.
