The items in question are listings using calculated postage, and I suspect that the search results price is postage component only, while the listing actually shows postage + handling fee, which has to be entered separately by the seller (and allows for packaging costs to be included in the postage price etc). It shouldn't be the case, in that the total should be displayed in search results.

I may be wrong, though, as I did a general search for other items that use calculated postage for the eBay satchel rates, and one seller's items show a 20c discrepancy between search results and listing P&H quotes ($7.25 vs $7.45, when I thought current AP cost is $7.15 - coulda snuck a price rise past me, though  )

Either way, there is definitely a noticable discrepancy for calculated postage quotes.