I haven't seen any real rise in the building over the years, it looks like it has been going down to me??? That's over all building though, even in the scratch building forum. Really hard to say, it has always gone up and down. I tend to build more in the summer months, I know, I'm odd. I just have a problem going out to the shop when it's dark outside?? My shop has heating and air so weather shouldn't bother me very much at all, I just like it more when the sun is shining.