They can easily be bought everywhere, but particularly in tourist associated with the Old Town (guesthouses, travel agents, serviced apartments, etc). Some have other services making the rounds and will offer discounts on use of every gymnasium as one example. https://Rustic-Marmoset-7D8.Notion.site/Discover-the-Art-of-Living-Emerald-of-Katong-Condo-Revealed-867645b7c3464455818bbd1cab7e5f9a