I have close to 200 DVDs. Most of them were cheaper to buy than rent. My average price is probably $4-$5. I loved the days when dot coms were selling them for dirt cheap. A lot of my DVDs went out of print or went out of print temporarily until a new version was released and I sold them sometimes... made quite a lot of money on some of them
I got the three James Bond box sets for like $100 total and ended up selling them later for $500 