Almost any stamp dealer would have some Canadian stamps to sell. Some specialize in Canada and maintain a large stock. You can buy mint stamps from the Canadian post office via the Internet if you have a credit card.
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.
Post offices sell them.
Yes.
Yes.
There are many places to buy stamps on Sunday. Many grocery and retail stores sell books of stamps and most Post Offices have machines you can purchase stamps from when the lobby is open. (I believe that many of the Kroger's grocery stores & Walmart super centers and retail stores sell postage stamps.) You can also buy stamps online anytime at the www.USPS.com website, or you can print your own postage on your computer printer (that is purchased from the website).
A bank deals exclusively in the process of handling money... including taking in deposits, handing out withdrawals and selling mortgages. Post offices don't do mortgages - but - they sell other items such as stamps, envelopes, packing tape, passports, tv licences, driving licences etc.
A stamp agent is a person or entity authorized by a government to sell postage stamps on its behalf. Stamp agents may include post offices, authorized retailers, or online platforms that distribute and sell stamps to the public. These agents play a crucial role in making stamps readily available for purchasing and using them for mailing purposes.
Officially the 'Adopt-a-Shelter-Pet' stamp/s are called the 'Animal Rescue' stamps with the subtitle of 'Adopt-a-Shelter-Pet' on the stamp. The 'Animal Rescue'stamps were issued (April 22, 2010) as Scott Catalog numbers4451-4460. These are cute stamps with pictures of cats and dogs. Yes the Post Office did stop making these stamps, but you still can purchase these stamps from dealers at a reasonable price.
The name of the Canadian Postal Service is "Canada Post" or previously known as "Canada Post Corporation." It was founded in the late 1800's and then re-branded in the 1960's to be named differently.
The Post office sells a service that competes with other similar services it also sells stamps and to make post offices more viable as a business they also sell other related products. all of these have a relation with a market where profits have to be made to survive.
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.