Hi Jeepnstangs,
I wanted to respond, as this is something a few users have asked about. I understand the way the transaction details have been displayed in PayPal are a bit confusing.
Though it does show a full amount of an item price + any shipping, ultimately what is being deducted from your PayPal account is just your "out of pocket" amount -- the item and shipping minus the amount applied from your eBay Bucks certificate, so the right saved amount. I agree it is confusing and teams are exploring this, but you should know that you'll pay the right amount, and not the full amount - that latter figure is what is being paid to the eBay seller.
Hope that makes sense, and please stay tuned for any more discussion about it. I'd encourage you to view posts at the original eBay Bucks discussion board also, as that is where most of the posts and responses are now:
Link Regards,
-Hagar
eBay Marketing