Eucalyptus Bunch?

You can get 40 stems of silver dollar eucalyptus at Sams for about $36. Two bunches should be plenty for 18 tables and give you some left for the cake table, guest book table, sweetheart/head table. So, not too terribly expensive.

I found two other community posts that had some good responses about cost and quantity of eucalyptus bunches:

Eucalyptus Table Greenery

Hopefully those discussions are helpful!!

I would double check with the florist about how much is in a bunch, like how many stems. Pretty centrepiece!