I wished I got to ya earlier but around the time you posted this I had some personal problems.
There are game stores but they are tricky to find.. all the ones that were around during the pc engine boom days are now gone....
and I'm pretty sure the ones that are still operating are pretty aware of the prices that go on eBay..
all I can say is good luck..
I think this was 1997 just before the hand over Its besides the Star Ferry and Hong Kong Cultural centre/planetarium
Everytime you cross this bridge your life will get extended. I think this was Deep Water bay around the other side of hong kong island near the Ocean Park
My late pops I think this was 1992 along with my cousins I think this is Wan Chai district centre
Again 1992 and the top of my mom's bro's house and their kids some place up in the hills, Sai Kung, New Territories XD