It would be handy if the sample entries for bid text, form tmpl, et al. could appear automatically upon adding a bid content-part (right now, they appear only if you first create the content-part, then revisit it with 'edit' button)
Also, it would be good if the backend user could choose the currency notation-- it seems to be hardcoded for euros, which use the "," mark, whereas for dollars, the "." is used instead.
Finally, it would be good if the backend user could choose, "no delete bid after verification", because it seems that a visitor can make a bid, verify the bid, and then delete the bid.
