I did my own... it took lots of time but it was much much much cheaper. I've seen ones w/ the little plastic trays and tulle with regular place cards attached... If you can just get away with tulle and ribbon or do the boxes I think you'll be fine.. I got into the bows/ hot gluing the flowers, etc...
I did my koufetas there in an ivory box with a black ribbon sealed with our initials I bout the kit at micheals they have great stuff there and the box comes with a website that will guide you step by step My theme is ivory and black...
Re: DIY Koufeta--tips?