GoDaddy auctions Listing question

[domaingenius]

I have a few domains listed at Go Daddy on "Make Offer/Counter Offer " basis but using express edit I changed ,I thought, to include also a "BuyNow" price BUT doesnt seem to update at all. How long does it take GD to update the info as when I check the domain it does not show BuyNow but only shows the minimum offer ?.

Thanks