$49.99 Rota Rooter service cost is per sewer line. Seems reasonable, but be warned! The tech guy will always give you a sales pitch to get their RootX and BioOne chemicals at a ridiculous highly marked-up prices of $125 each. That $49.99 ad will actually cost you hundreds of dollars if your not careful. Your sewage may really need this chemicals but look around before you throw your money down the drain. Go to eBay and search for Rootx and Bio-Clean (very similar to BioOne). You can get a RootX for as little as $35 shipped and Bio-Clean for $37 shipped. Just a friendly caution.