We don't generally discuss values here, they are too subjective and there are so many factors that go into a given price.
However, looking at completed listings on ebay, there is a Marquetry vase that sold recently for around 280 US dollars. That was a very large vase and so commanded a high price, generally smaller vases sell for less. Your vase has 'flowers' (hence the Grand bit of the Marquetry name) which is a nice feature that would help to make it desirable.
For future reference how tall is your vase please?
John