Using G7 taxi to Giverny

G7 is a taxi company, not a car service. Even if they would accept such a ride, it would be on the meter, so the cost would be eye watering.

A car service, like Day Trip, for a return trip, would likely be +€500

A direct train (return) from Gare St Lazare would be around €70

To be clear, the return train ticket would be around €70 for TWO people traveling together.

Have you read this thread a few entries down on this page? You might find some of the information there helpful.

Viator/Blue Fox Travel Giverny Small Group Half Day Trip with Monet's Gardens from Paris

Shuttle Inter does this trip for 400€ for up to four passengers.

Thanks for the clarification G3rryCee. I,perhaps erroneously, assumed that the OPs "we" meant 2 people. Perhaps they are more.

Thanks to all of you- I will explore the suggested options.