請問香港邊度可以買到將卡片/相片修圓角用的圓角器?

I got one a few months before at Festival Walk Log-on. If you want to find cheaper places, you may try big book shops - the stationary section. I even saw it in small book shops (the more modern ones).

The price is around HK$50 (Log-on)

教協的超市內有售