Hmm, seriously, we are saying to get a new stem while you're at it, because it is probably the same "quality" as the handlebars you broke.

Yes, by shopping around a bit, it should be possible. If you have very little money, see if the shop has some leftovers from people who have upgraded theirs.

The thing is, if you do "stunts" on a bike, be prepared to pay for upgrades, repairs, and/or spares. If you don't want to upgrade your stem and handlebars in order to be safe, then don't. At this point, I don't care anymore about your safety, because you yourself do not care at all. Go find a rust-bucket you can take the handlebars and stem off of. It will be cheap.