Buckeroo, dimsum mum,
Thanks for your advice. I've got half a dozen organic ones and a couple of covers already from Citysuper. Although the covers are not one-size, they can fit from 20 to 35 lbs, so not too bad.
Only after I bought them and found out that I should have bought directly from Mother-ease.hk because they are offering 20% discount. I guess the half a dozen I have are not enough if I'm replacing disposables full time, right? Do you have any idea how many diapers I need to have? Also, I see there are disposable liners available, has anyone used them before? I guess they are for easier cleaning up!