Grimlee beat me to it. Using real ivy is by far the cheapest. Look at some of the older buildings in your area that are covered with it, and talk to the owners or the gardeners, they'll probably have tons of it for you. Most try to keep it thinned out to keep from getting rat infestations. Rats like to nest in it.
For the synthetic stuff, keep in mind that it's all petroleum based, so the costs for new stuff is going to be very high.
For the synthetic stuff, keep in mind that it's all petroleum based, so the costs for new stuff is going to be very high.
