Hi,
Auctiva doesn't have a "standard" font, but they do set a specific font in each template, so that the description and seller details will default to that font (if none is specified as override).
Could you copy the template to the practiceboard and post the practiceboard link and a link to one of the problem listings or the listing number at ebay.
I'll give it a look.
www.practiceboard.com
Danno
Edit: "vendana"???? Do you mean Verdana?