I'll ask hubby how much it cost, as I'm not sure how much of what wood it took. We did get the frame wood ( 2 inch x 2 inch )from a local carboot. Fiver for 9 bits at around 8ft long each piece (I think, again I'll check) think the frame for everything took about 5 packs in the end. And we used tongue and groove wood from B&Q, about 7 packs, maybe 8 in the end. It was the long stuff. The wire we already had. PVC sheet about 6 quid, those spacer things and special screws for the PVC roof are the killer, soooo expensive.
As for time probably a couple of weekends from start to finish. Hubby likes all this DIY stuff, especially little projects like this.
So I think it cost about £100, but I will ask and PM you.