This is pioneer price.
https://www.pioneerhongkong.com.hk/site/en/product3.asp?pid=160Marantz 7600 should be around HK$5,500 (Fortress, 7th Floor, Times Square, Causeway Bay MTR station, Hong Kong side)
If you buy from reputable stores
Fortress (same as Powerbuy), Broadway or Chuen Yuen (in business for 30+ years) and Chinese Club (Parallel imports from US and Japan), there should not be any problem on การถูกโกงในรูปแบบ. Their reputation are too 'expensive' to just to cheat you on little things. Also, Yau Shing Commercial building at Exit E2 (Bank center), Mong Kok MTR station on Kowloon side was kinda OK though slightly less reliable than the ones earlier.
Of course, most Thai tourist likes to shop in the Nathan Road around Tsim Sha Tsui area where they were enticed by tons of neon light and unbelievably low price and that's where the cheating mostly takes place.
