I'll show pictures of the same kinds of guns that I have and list an approximate price for a good used gun:
.25 pistol $150
.22 Ruger $200
.22 rifle $150
12 gauge shotgun $200
There are guns available that fire larger bullets. I like the smaller sizes for low cost target shooting. Shotgun shells are inexpensive as well. A smaller sized bullet is still an effective defense tool when used properly. You can get into gun ownership affordably and safely. Take classes. Learn. Prepare. Protect your home and your loved ones. If you have kids, get a gun safe and trigger locks. You can be safe. Teach gun safety to your children. Teach them about their 2nd amendment rights. Teach them why it is important to protect our home.