Plenty of nice items are popping up on eBay now - not surprising given the time of the year. This tiara diecut is one of twelve designs, all of which can be seen on page 188. All are hard to find in collectible condition, but this one seems to surface less than some others. There was a brief blip up on the selling price of these tiaras about 18 months ago, driven mainly by one buyer, but since then the market has settled down. Most of these sell in the $700-1000 range at this time, but this is a quirky time of year so who really knows?
09/11 Update: This sold for a modest $597. Given what I have written above, I think the era of big dollars for these tiaras is over, at least for now.