What did you revise in the listing?
If you changed the category from collectibles to another category - the "free" gallery of either .35 or $1.00 is checked off and that and any other related stuff attached to the first category for larger pictures, bold highlight or subtitles cost extra. Normally at the bottom of the page before you list an item - you can click on the amount of the fee and ebay should tell you what the fees are related too.