i have some questions and i am new to online shopping

i want to buy this thinkpad from amazon

amazon.com/ThinkPad-X120e-05962RU-Notebook-1-6GHz/dp/B004PILTA8

1. does they ship to singapore via vpost?
2. do i need to pay shipping charge for shipping the notebook to vpostusa address in usa?
3. will they pack my notebook in one box?
4. can they( amazone, vpost, etc involved) accept my DBS debit card(mastercard)?

thanks you, very helpful post! looking forward to your reply