What the ad DOES'T tell us is that these are cheap, green painted thin steel tubes which come in a small box and have to be assembled into what looks like a substantial trellis tower.  IT.IS.NOT!  These things will rust in a few years and lose any strength which they have.  Which as it is won't actually support substantial weight like the iron ones it seeks to imitate..  So if you think you're getting a deal, you're NOT.  Don't be fooled by the photo!  Buyer beware.