User Activity

As I am leaving for holiday for 2 weeks, I do not wish to halt all listings. I have seen sellers notify, through their listings. Is there an easy way to do this without editing every listing?
I have had a few instances just recently with new members testing the waters, and not paying for their item. All fine, but I have put that restriction on my preferences for all listings? or so I thought? how do I remedy this??
Just bought a phone, seller says they dont have paypal. I was sure that it was a rule that paypal must be an option??? Therefore, If I bank transfer, am I covered by ebay if there is anything wrong??
Curious as to why people are paying?? ridiculously high prices for things such as iphone 4, in search history, seen them go for $15,000. Surely these are scams or money laundering?? If someone has a great explanation, I'd love to hear it? Thanks
I have another issue! I am currently allowed??? to sell up to 280 items per month! YAY, oh no!. Now I can only list so many at a time in any category, as apparently my dashboard shows me to not be reaching certain standards??? I don't understand the ...