Hello, I am a new seller to ebay and have been receiving "offers" for my listed items at full asking price.  Two i received were from the US and one from a remote location in WA (australia).  My listings state that i only post within Australia. My question is are these just scams, as they are not asking for anything in the offers?  My assumption is if they were legit buyers and  wanted to purchase at full asking price, then why not just  "buy now" and then make payment? Is there a way to block these offers, it can be very deflating or does it just come with the territory?

Would love to hear any thoughts and or advice from more experienced sellers.