You can get a really light tarp by spending a lot of money. Or you can get a pretty light tarp by spending just a bunch of money. Or you can get a decently light tarp by spending a decent amount of money. Or you can get a heavy tarp by spending almost no money. Of course, you can also get a heavy tarp by spending a lot of money. So, what is your budget, and how light do you want it? Also, do you know the size you want?