$28 only for International lunch buffet at Straits Cafe! in Tampines Street 32, East Singapore for sale

NEW and unused voucher from Groupon for dining at Straits Café, Rendezvous Hotel.
Usual selling price on Groupon is $29.90. But now I am selling only $28 for each voucher. I have 5 vouchers in total.
Valid from 11 Apr - 6 Jun 2014.
Valid from Mon - Sat: 12pm - 2.30pm.
Not valid on Sun and PH.
•Feast to your heart's content on a variety of international cuisine
•Over 40 choices of Appetizers, Hot Selections and Sweets
•Special Durian Desserts
•Award Winning Laksa puts a fine dining twist on local favourites
•Sushi, sashimi and carving stations available (Rotation basis)
•Sophisticated dining ambiance
•Perfect for avid foodies and family gatherings
•Central location near Dhoby Ghaut and Bras Basah MRT