It's actually less money in every way. We used turf this summer. We tried soap, bio degreaser and even animal birthing lube. The only way to make it slide fast enough was to run a hose on it and basically turn it into a river. In Colorado most years we have water restrictions. If we ran our setup like this a few times a week, our water bill would be insane. Also having wet carpet or turf on top of wood means that your drop in is likely to warp or rot out faster. Detergent will kill your grass and using that much water will turn everything into a big mud bog. We got mud caked on our skis. It was just a hassle to have to clean them after every run. Soap on PVC can make it too slick. These are some of the problems we were having with turf. You may have them, but maybe not.
Lattice fencing can be screwed directly to the drop in frame. You don't need water at all, so no huge water bill. You save $$ because you don't have to buy plywood, turf or carpet. Since your wood frame is staying drier, it will last a lot longer. It's lighter than turf on plywood so it would work better for urban. If it get's snow on it, it would still work the same. The only thing it isn't good for is the lip. Construction fence has a little more grip so it's better for your take off. You could put the construction fence on top of the lattice or make your lip out of dirt; then cover it with lawn trash bags. Then just put construction fence on top of that held down with tent stakes. That would be my choice.
Anyway, use it or don't use it. It's up to you, but it is cheaper. And to stewiegriffen66