A Few Ebay questions that are bugging me?

Hi,

Just a few simple questions thanks for any info.

1, When you sign up to the £49.99 Ebay shop can you not list 1 day Buy it now auctions ?

2, How do i link some of my ebay shop listings into my auctions so that when people see my auctions they can view other items in my shop ?

3, Should i offer my items worldwide if so what are postal charges for internaionally singed for item's weight is around the same as iphone cases ?

Thanks for feedback.

Nathan.