My mom is using XOX Black Postpaid for years already. Pays RM 10 per month (plus 6%) for 1GB and 20 mins of call.
Even hers is given 1GB per month and carried forward, she has accumulated 30+GB because she uses the home wifi and only useful when she goes out.

If anyone can remember the Jaringan Prihatin package, that was a better deal. I was using it to offset my Umobile prepaid for 1 year plus free 1GB per day.
I also once had Yes4G Kasi Up B40 but later on ported out because of poor indoor coverage.

So this Pakej Perpaduan is definitely for very light users. Works out 5GB per month at RM 6 per month. Therefore this package cant youtube much. But can probably survive on occasional FB videos.
Not recommended for child / teenager either.