How much does it cost to replace a O2 sensor in a 99 Honda Civic?

I got a quote of $400 with labor and tax. Nothing wrong with the computer or wiring. This seems extremely high to me but I live in NY. Please, only answer if you are a machanic or work for Honda.How much does it cost to replace a O2 sensor in a 99 Honda Civic?Check out Oxygensenors.com. They have cheap prices.How much does it cost to replace a O2 sensor in a 99 Honda Civic?About $150 for the part $50 laborHow much does it cost to replace a O2 sensor in a 99 Honda Civic?$250