滾軸溜冰鞋一問！～

You mean Roller Skate or Ice Skate?
They are different

For roller skate:
If it's roller skating, there are many shops in Hong Kong, you may google it and find some shops
Here's a websites:
http://www.pro-skate.com.hk/skateshop/index.php

For Ice skating:
You can go to Tai Koo Shing or even Festival Walk to get the shoes, they are
around $2000, I am not quite sure.

Both of them don't care about the weight, instead, the balance.

太古,保良局北潭涌渡假營,重的人都啱玩,去到先買都得。

去太古玩啦!
你可以租or即場買加!
http://www.coolskate.com.hk/index.html
冰鞋冇最大負重加!