I remember the first time I saw John Derian's gorgeous decoupage work. I also remember the sticker shock a look at the price caused. Yikes! Lucky for me, it's not all that difficult to create your own glasswork with that Derian-inspired look.
All you'll need for your own tray (although this DIY translate well to many plain glass pieces) is a glass tray, a printout of the image you wish to decoupage, and ModPodge. Graphics Fairy has a great selection of images you can use if you don't want to design your own.