Depends how much you do urban, it is if you do it alot but if you only are gonna go like 5-10 times dont. Also alot of people have them, u can probably find people in ur area who regularly do urban.
Build one, they are a lot cheaper if you aren't doing urban a lot like the above poster said^. I heard making them does not always last as long as the rubber begins to stretch out. But while it is still working it should be fine.
