Prices quoted are in Singapore dollars and do not include postage charges.
In general, I would encourage self-collection (@Yew Tee MRT station) as there is a risk that your learning aids may be damaged in the mail or worse, lost (opt for registered mail as far as possible!).
If you'd like your items to be posted via registered mail (postman delivers your package to doorstep), please note that that would be an extra $2.25 on top of normal local postage charge.
All my postage charges follow the SingPost charges, according to the weight of your parcel.
Once I have posted out your learning aids, they are out of my hands and I will NOT be held responsible for any damage to or loss of the learning aids. I thank you for your understanding on this matter. :)