I had one made and it is not what I wanted. I wanted to be able to change the size of the tower to accomodate the number of cupcakes. Does this exist and if so, where do I get it?

I've got a few of these items on my wish list:

http://www.weddingfads.com/

http://www.bossmanufacturing.com/

I have been looking into getting one myself and this is is what I have found. The Center Post and clear Acrylic stands say you can use as many or as few tiers as needed plus they come apart for easy storage.

http://www.globalsugarart.com/cat.php?cid=953&s=0

http://www.cakedeco.com/cgi-bin/webc.cgi/st_prod.html?p_prodid=8618&p_catid=292&page=2

Hope this helps!