Heya!
Your item must be in the "reserve" line - it's part of the front page treasury but the bottom row of items is not actually featured on the page until something above them sells out. when that happens, they move up, one by one :)
Last week I was in a FP treasury's reserve line and somethine sold around 10am, I was the first to move up, and got loads of views/sales from it. So hopefully that will happen to you too :)