Thanks .... I didn't take pictures during assembly but it is easy to make as long as you have the time to mess with it. Like anything else, I think I would go faster once you know how to make the pieces.
Cost for the big one was about $75 but I used free used carpet. I don't know how much new carpet would have added to it.
The perches are 13" concrete forms that have been cut into 16" & 22" lengths. You'll need a hot glue gun or staple gun, sharp scissors, measuring tools, saw or box knife to cut the concrete tubes, etc. The base is a 24"x24" plywood precut from Lowe's. Not that expensive to make but it did take a lot of time to make--can be made in a weekend--maybe less time if you use less glue or more done by a staple gun. The perches are 2 pieces of tubing glued together before adding the carpet. The posts & perches are screwed on/together. The sisal rope I also purchased at Lowe's. You'll need someone to help once you start to assemble all of the parts.
Perches---12-13" concrete tubing cut along the lenght into 3 sections. Maximum use--cut the perches 16" long, glue 2 pieces together. You'll have one extra piece this way, glue a piece of cardboard onto it to strenghten. If you want longer perches, measure/cut to the size you want. Keep in mind the longer the perch the more flexing it will do unless you have more support added. I glued the carpet to the inside curve, wrapped around to the bottom/glued, matched the center, & cut the carpet along the edge bottom only. Wrap the upper edge of the carpet around the end, glue.
Posts are screwed in from the bottom. I used buckets & such for support until it could be set upright. One thing I do recommend, use a small block under the perch at the bottom of the "u" to support, & then screw in. The curved upper edges are easy to screw in.