"Item 181707816636 states $15.45/postfree - Clicked Buy Now and price became $34.97"
So I assume that as it was immediate payment required, you didn't go ahead.
It looks like the seller keeps making changes to the listing and my guess is that the last lot of revisions weren't actually showing on the listing when you clicked Buy It Now.
Revision
06-Jul-16
12:57:42 AEST
Item Location
Quantity
Buy It Now Price
Postage Terms
Revisions
http://tinyurl.com/h7k9d2f
