It's entirely possible that those options weren't readily available in the local store he's using. I'm not familiar with Singapore in particular but a lot of Asian countries don't have the huge electronics box stores that are common in the US and Europe. I've seen quite a few videos where the best electronic source the person had was what would be a small sized store in a US mall (20 feet wide, one isle with a counter running down one side for example). Online shopping does exist but shipping times and cost can also be pretty large.