Thats not necessary,, just making sure you used the chart !! Sometimes people just go by what a seller tells them !!
As an antique Wedgwood piece I think your trinket box should sell between $60. and $80.!! But if you sell it do not try ebay !! Go to Ruby Lane or one of the better sites for antiques !! They are still making this same shape trinket box and are selling them cheaply on several sites !! Did not find the same cameo that is on yours but most of the ebay buyers wouldn`t care which one was on it !!