I'm going to go out on a limb and assume you have items from multiple different sellers in your cart, and there is a total on the right for every item from every seller?
It's ok, you don't have to pay for everything in your cart - you can checkout with one seller at a time, just look for this link:
You can also click "save for later" on some items, they'll be removed from the cart, but added to a list that you can view / access on the cart page, and add them back in if or when you want to buy those, too.
eBay does this because sometimes it's just easier to pay all sellers at once, plus there are coupon codes available sometimes that require a minimum spend, but this means that you can make up the amount with items from different sellers.
