E-party floral centerpieces

I am looking for inexpensive floral arrangements to be used at my E-party, which is only 2 weeks away. I have already purchased 7 1/2 inch glass cylinder vases and 3 inch candle holders that can be used for candles or singles flowers (ie. a single rose). I have included pictures of the actual pieces below. I have also purchased pebbles to use for the bottom of the centerpieces. I will only be purchasing flowers, and will be putting the arrangements together myself for apporximately 8 - 10 tables (one cylinder vase and two candeholders for each table). Please provide me with quotes for inexpensive flower arrangements, including the type of flowers used. I will need to book a vendor ASAP. Thank you!

P.S. I live in the Bronx and my party is in Yonkers.