Rolling with JUST weed is wasteful, I hate this snobbery regarding rolling with tobacco. .2-.3g of tobacco a couple of times a day REALLY does not matter one bit.
I stopped smoking tobacco just over 7 months ago, glad I did, I only really smoke cannabis through a bong now. I'll smoke a joint with tobacco if I am offered one, but I won't buy tobacco/cigarettes in order to make one myself, as there would be some temptation to smoke the it on its own because I've smoked in the past.
Maybe OP could source low quality weed or trim to use as a mixer. You can get it pretty cheap.