Was searching for flower delivery in Singapore and found Floristique. I liked that they had a “Wholesale” section on the website where I could pick the individual flowers; however, I’m not certain that I really got the wholesale price after checkout, 3 hydrangeas were 36SGD plus tax. There was no delivery fee, and they could deliver in the afternoon when I ordered in the morning. This is slightly lower than in Hong Kong where I would pay around 75-80HKD per stem of hydrangea. That did not include any delivery fee. Note that due to the wholesale interface, I accidentally ordered 6 stalks when I should have clicked on the 3rd stalk.
Other flower delivery services I considered was Little Flower Hut. Their flower arrangements were not to my liking; however, they do offer one-hour delivery.
If you have any other more reasonable flower delivery services, please tweet me.