If you mean stamps for items of post you are sending to other countries, yes, Australia Post has a range of Australian International postage stamps, which are marked accordingly, in blue on the edge.
If you mean stamps from other countries, no, Australia Post is not a commercial outlet for the post offices of other countries.
Some of the larger Post Offices may stock packets of used (or CTO) postage stamps from other countries at minimal cost. The packets are usually focussed on a specific theme such as dogs, trains, birds, etc.
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There are a number of retailers that sell stamps in Australia. These include: Australia Post, the official postal carrier for Australia, and Amazon. Both retailers offer a wide selection of stamps.
Post offices sell them.
Why not just use the 2006 stamps? You can purchase stamps that can be put on the envelope with the 2006 stamps to make the appropriate rate. Most post offices won't exchange stamps, as there is no reason to do so.
There are several post offices in Sydney, Australia. One can find information on the locations of these offices on the official website of Australian Post. The website has a tool which allows one to enter in one's address, suburb or postcode and retrieves a list of the nearest post offices.
Australia Post Offices are closed on Saturday afternoons and Sundays nationally.
Stamps can be purchased at any post office. As long as you have the correct amount, you can use them for international mail. In the US, the Forever Stamps cannot be used for international mail, they must have a denomination on them.
The Christmas 2009 stamps will be on sale in post offices throughout the UK from November 3rd 2009.
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Yes the post office sells 10 cent stamps. Stamps are available in a wide variety of denominations and not all offices will have a full selection. You can mix and match as necessary, so if they don't have 10 cent stamps, you could buy two 5 cent stamps.
You can buy postage stamps for mail in Canada at post offices. The Canada post website will give you the locations of these. You can also purchase them by mail order, phone or online through the website.
Yes, because with the use of e-mail, less letters are being sent which means that post offices are making much less money form the sale of stamps.