It will be $25 off any amount unless it specifically said it was one of the $25 off of $50 offers. The fine print of mine is:
"$25 off Code: This single use promotional code (the "Code") can be used solely towards one purchase at RedEnvelope.com (not including tax, shipping, handling or surcharges). Code cannot be combined with any other offers or used for sale or clearance items, gift cards, same-day / international delivery, taxes, or third-party hosted products (e.g. wine). The Code will expire on the earlier of (i) the redemption of the Code, or (ii) 4/30/2012. No cash value. Code cannot be redeemed for cash or store credit. Code may not be sold. Limit one per customer. Void where prohibited or restricted by law. "
Some others posted that you can choose something off of a Red Envelope sister site - you will see them listed at the top of the Red Envelope website (Sherri's Berries, Cherry Moon Farms, etc). Copy the ITEM NUMBER from the other site. Go back to Red Envelope and put that item number in the search box. Then, add the item to your cart and use your Red Envelope credit to buy.
Hope that helps and congrats!