Selling GRE books in Tampines Road, East Singapore for sale

Hi. I am selling the following gre books for $50. Individual prices are listed next to the book. The books are in good condition with no writings and highlightings. Self collect at Simei or Tampines MRT.
1.GRE General Test (Research & Education Assocation) by Pauline Travis, Ph.D., David Bell, Ed.D., Lucille Freeman, Ph.D. Bought at $40. Letting go at $10.
2. Cracking the New GRE 2012 Edition by The Princeton Review. Bought at $39. Letting go at $15.
3. Barron's GRE 18th Edition by Sharon Weiner Green, M.A. and Ira K. Wolf, Ph.D. Bought at $39. Letting go at $15.
4. Barron's Essential Words for the GRE 2nd Edition by Philip Geer, Ed.M. Bought at 24.90. Letting go at $10.
5. Barron's GRE Verbal Workbook by Philip Geer, Ed.M. Bought at 24.90. Letting go at $10.