I was going to build a run with PVC pipe and my own wire -- by the time I priced that out it was cheaper just to order this.  Then I realized you can very easily assemble and disassemble the metal pieces because of the push-button catches.  A few weeks ago I started out by building only 2/3 of the run for my little babies, and in another couple of weeks I have two more birds to add to the flock plus they all will be full-grown, so I plan to add the additional 1/3 to make the full size of the run that I ordered.  That turned out to be a really great way to get into backyard birding!  The flock sleeps indoors at night right now, but before they stay out 24/7 I plan to reinforce the stakes/maybe dig the wire into the ground in the run's permanent location to better prevent against predators.  Overall I feel this has been a good purchase so far!