Ebay question commit, another, because, question, different

librazhy

One month ago, I went ebay.ca, found an item I like, it said bid $5.00, so I click bid, and I won the bid. However, I didn't know the shipping needs $15. Therefore, I didn't proceed paypal.

Today, I go ebay.ca, found another different item I like, it says buy it now $7/shipping $8, so I click on commit to buy. However, the paypal indicates the total is $37 because the shipping is like $30 instaed of $8. Therefore, I didn't proceed paypal.

My question is, when I win a bid or commit to buy something on ebay/ I don't proceed the payment, what is going to happen?

thanks