the model R300 not listed, replace RX300 should be R300 on 2001 Lexus RX300

I was told i need a B1S1 AF sensor costing $239.90. Is that price correct and what would the labor be to replace it?

Asked by for the 2001 Lexus RX300
Bank 1 Sensor 1 is available cheaper from aftermarket sources as opposed to direct from Lexus. Denso actually makes the sensor for Lexus and are available from many sources. Labor to replace the sensor is about an hour but I have seen the RX300 front O2 sensor seize in the manifold and become difficult to take out.