It's hard to give an exact number as new Beano comics are constantly being produced and older ones might be out of print. But there have been a significant number over the years.
It depends. Some rare or early editions of Beano Comics can be quite valuable, especially if they're in good condition. But common issues might not be worth much.
Yes, you can get the Beano comic in Australia. It might not be as widespread as some other comics, but it's out there. You could check major book retailers or specialized comic shops.
It's hard to say for certain. Sometimes characters come and go in comics. You might want to look online or ask other fans for the most up-to-date info.
The Beano comic is pretty darn old. It was first published in 1938 and has continued to entertain readers for decades. It's a staple of British comics and has a rich history.
It depends. Some rare or vintage editions of Beano and Dandy Comics can be quite valuable, especially if they are in good condition and have special features.