KUMALA

Please use the internet-based book store for any bargain textbooks, now I have some which I used most during my times of studies.
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  [5 ]9 H1 Q. XOne is as-you-mentioned "Second Hand Book Store", please use the link: http://www.abebooks.co.uk (This one really rocks, and I believe it should meets most of your demands. )
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: [, ~. x0 Y) \The other one - Amazon, however. It's not always cheaper than Abebooks, but you will find an even wider range of the book selections: http://www.amazon.co.uk
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3 F% F- m2 l: H( i9 T0 _The third one, which I used not that often, as this one actually has the real book stores all around the UK, named Waterstone's: http://www.waterstones.com+ ^* z( D( P* |: D5 w# k  E
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Besides, for a postgraduate student, you may not have to purchase every book listed on your reading list, it's just simply because you need to read at least 4 or 5 books for a single course per average. Therefore borrowing from the university library as fast as you can would be even better, yet absolutely cheaper. " v: U$ x0 N2 G
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So you don't actually need to walk that far for seeking Bargain shops, everything can be done online. 4 L; i, ^" f; a' Z
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Best regards