Couldn't an inexpensive alternative be shelving (either ikea, or reno depot) and cover with plastic, just a thought. Ebay has one at 86.58 cad here is the link http://cgi.ebay.ca/New-Garden-Greenhouse-Tower-Indoors-or-Outdoors_W0QQitemZ160324463874QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item160324463874&_trksid=p3286.c0.m14&_trkparms=72%3A1215|66%3A2|65%3A12|39%3A1|240%3A1318
no subject