Where to buy cards for stores and pharmacies in Singapore

The other day, a friend asked me to help him find a gift card for a well-known pharmacy chain in Singapore. I thought it was easy at first - go to the website and sign up. But it wasn't! The official website didn't have the card, so I had to look for third-party services. I found a couple of options, but I wasn't sure if they were reliable. In the end I managed to buy the card, but the residue remained. Does anyone know any trusted places where you can buy cards for stores and pharmacies without any problems?
 

I usually take these cards online, it's much easier than running to the stores. For example, for pharmacies or supermarkets in Singapore, you can use esim Singapore - everything is quick and convenient. I also recently used the same site to buy an eSIM when I was traveling. If you are interested, here is the link: Buy eSIM for travel. The main thing is that the service should be reliable, but it really saves a lot of time.

It seems to me that more and more people are now choosing such cards, especially for pharmacies and grocery stores. It's convenient for both the giver and the one who receives it. Although personally, I still trust offline shopping more - I don't know why, but I feel safer when everything is in place. Maybe I should try the online format since everyone praises it so much?