Hi Mau, for the cement/Quikwall projects, cement comes in 90 lb. bags and takes quite a few projects to use it up, but the cost is only about $9.00 a bag. Quikwall comes in 40 lbs. bags but still makes quite a few projects and costs about $16.00. So either way, that's not too expensive. The expense comes in the chicken wire, hardware cloth, PVC pipe, styrofoam, etc. I already had quite a bit of that kind of stuff around from other projects so that helped. I used to make a ton of this stuff and had garden art sales at my house every summer. But that got to be way too much work so I quit.
You could always grab a friend and split the costs. It's fun working with somebody else too.
