you are buying things from forums or online stores?
it makes a difference.
1) Online Store
Local or overseas, you'll need a credit/debit card or paypal
account for making purchases.
If the online store is located overseas, they'll ship your items
through fedex, dhl etc or by their own local post service. It
really depends on what shipping options they have.
Local online stores e.g. Apple and Creative have their own courier
service. Once you make a purchase, you pay by credit/debit card and
they'll most probably send your item to you within 3days, unless
otherwise stated.
Depending on their shipping options, if you need the items fast you
can opt for fedex/dhl, if not just
2) Forums, Ebay or Yahoo Auctions
Depending on the seller's T/C and his location, you can always make
a bank transfer if he's located in singapore.
If he's located overseas, then paypal will most probably be the
preferred payment method.
Shipping can go from anything like fedex or local post service,
charges applies.
Payment Methods
Wire Transfer/TT takes a long time (3 - 7working days), plus a one
time service charge applies. Most of the overseas sellers on ebay
wont use this.
Paypal - Need a credit/debit card for registration. Most preferred
payment method on auctions sites. Unless the seller is local.