For Leica I found a shop within a strange shopping complex close to the other shop, also on the Kowloon side. Middle road face to face of the Sheraton Hotel. You have to go into this shopping circle turn twice right hand as far as I remember (street level) and then it is right hand. But do not quote me on that, my memory is not that good with this.
But I have no name and the shop has neither regular business hours. If he is not there, he just shut down the curtains and as a European you will not see any indication that there is a camera shop. so you ahve to pass buy several times in the morning and/or the afternoon to find out when he is open.
He takes cash only. Around 50% of the Leica list prices. Since I spent all my money on that trip on Contax gear, I had no chance to buy there.
All shops in Nathan road are just for tourists. Way too expensive. Usually you get recommendations for the northern part of Kowloon, but I found them significant more expensive than the other 2 mentioned ones. on the other hand, the shops (I do not remember anymore the name, these are 2 sister shops in Kowloon) have all Contax equipment in stock and make a better impression when entered the first time
There is also a shop on Nathan Road in the shoping compex called "Miramar" i think. Again street level on the right hand. They have also second hand equipment. But I did not find them extraordinary cheap.
Very often US prices are cheaper, depending on the currency exchange rate...
On the HongKong side I did not find any interesting Contax or Leica shop...
Ah, befor I forget, if you are on the Kowloon side, you have to do 3 things.
1. Get a cup of tea in the afternoon in the Peninsula Hotel. It is real nice sitting there at the lobby and breath this wonderful architecture and atmosphere.
2. In the evening, go also to the Peninsula Hotel, take the lift to go to the highest level into the Philip Starck bar within the Peninsula Hotel. You will have a great view over HongKong. And do not forget to use the mens room, It is worth a visit
3. The best view (romantic in the evening) from the Kowloon side to the HongKong side is if you go on the border of the water close to the Intercontinental Hotel at the bottom of Kowloon. You can buy a coke there at a Kiosk and sit on that border directly at the water with a fantastic view on the colourful skyscrapers of the HongKong side.
The other places I guess are all shown in the tourist gides (Peekview etc.). I can look in my old notes if you need some more tips for dinner places etc. I found it sometimes difficult to find certain restaurants, since I do not read/talk chinese. But I am sure the locals here in the forum know great places much better than me
Oh man, I would love to do a HongKong trip again