You can try Joshua Gummies on Facebook. I inquired from them when we were planning for my cousin's baby shower but sadly, it didn't push through. They respond fast and they have wide options to choose from. They have competitive rates, too, because they're a supplier. It's truly a one-stop shop for your dessert buffet needs.
If your near in mandaluyong or boni area i know a place who sells candies , chocolates and other goodies in a very low price . Its located in the ground floor of pioneer point condo beside mcdo pioneer .
Aside from selling baking goodies, Chocolate Lovers in Cubao also offers a variety of chocolates and candies for a dessert buffet and their price range is relatively cheaper compared to others :)
You need to browse through this link. You may find what you're looking for. https://en.yelp.com.ph/search?cflt=candy&find_loc=Manila%2C+Metro+Manila