I realize that gardening is a hobby for most people and most are concerned primarily with the health and taste benefits of homegrown veggies, but I've always been also concerned that the garden production be in some way efficient. I guess it's because long before I had a place with a real garden, I read this book from the 1940s called "Five Acres and Independence" that really was a kind of bible for very small farmers. The author was really obsessed with making each crop pay. So part of my hobby is looking at what makes sense to grow, and whether the costs are reasonable, profitable or extravagant, and I think a number of other Garden Group participants also think about this aspect as in this thread:
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=246x10085So the problem I see with the products in that catalog is the cost. Some of these raised bed kits are about 100 times the cost of a packet of seeds. So the question is, do you spend $1.29 on a seed packed and condition your soil with throw-away manure from some horse stables, use a spade to make a non-permanent raised bed and get 5 pounds of tomatoes for a few dollars, beating the grocery store's price?
Or do you buy the cedar raised bed kit ($110), the cold frame cover ($42), and the pest control net ($25), for a total of $175, or 5 pounds of tomatoes at $35 per pound? I realize of course that the kits last several years, but it's going to take a while for that kind of expenditure to be recovered.
It's always a trade off. You can get cheap knotty pine boards and a few nails from the home improvement center or lumber yard to make raised beds for about $20, and you can use home improvement "vapor barrier" plastic and cheap pine ferring strips to make a cold frame cover for probably $5.
Or, as I said, you can forgo the wood altogether and make one season raised beds with the dirt itself.
It all depends on what you want out of your garden, whether cost efficiency is important and so on.