A Lee 2 cavity mold can be had for just a hair under $20 from Midwayusa.com I have one and use it a lot. It drops bullets just fine I have not had the need to size any of them. I lube with Lee Liquid Allox.
I started out on the super cheap. The bucket of wheel weight were free. I picked up an iron skillet set at a garage sale for a couple of dollars. Though I I purchased two molds first. I still use them over 2 years later. I did upgrade to an electric pot a couple of months ago. Though I was casting for near 2 years with a gas stove, and an old skillet.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.