second hand A level books

Hello, I am selling some A level guide books and assessment books

1. Title : Chemistry H2 A level study guide (eiditon3.0)
    Author: CS Toh
    Condition: good
    Original price: S$22.36
    Selling it at S$15
http://www.flickr.com/photos/[email protected]/5853000972/in/photostream/

2.Title : Chemistry H1/H2 A level challenging learn-by-example (revised edition)
    Author: Thomas bond, chris hughes
    Condition: excellent, almost new
    Original price: S$28.85
    Selling it at S$22
http://www.flickr.com/photos/[email protected]/5853000986/in/photostream

3. Title : Chemistry H2 A level critical guide (revised edition)
    Author: Thomas bond, chris hughes
    Condition: excellent, almost new
    Original price: S$31.00
    Selling it at S$25
http://www.flickr.com/photos/[email protected]/5853000984/in/photostream/

4. Title : Chemistry H2 A level practiced MCQ (edition 2.0)
(recommended by RIJC chem teacher)
    Author: CS Toh
    Condition: good, quite new
    Original price: S$22.36
    Selling it at S$18
http://www.flickr.com/photos/[email protected]/5853000982/in/photostream/

6. H2 Economics A level prelim paper 2009
Condition: excellent
Price negotiable
http://www.flickr.com/photos/[email protected]/5852546605/in/photostream

7. H2 Biology A level prelim paper 2009 part 1 and 2
Condition: excellent
Price negotiable
http://www.flickr.com/photos/[email protected]/5853000988/in/photostream/

The first five books were bought from popular last year. So they are up to date. Interested please email me at [email protected]. Thank you.