Patron Driven Acquisition Project Mieko Yamaguchi – Bangor University

What is PDA / DDA? A new model of purchasing solely based on user demand –Just in time Traditional purchasing model –Just in case

Why PDA? Only buy e-books that users want Don’t buy e-books nobody uses Students can decide what to buy for the library – not lecturers or librarians Build up a critical mass of e-books available via the library Wider selection of reading material than the library can hold

What did we try to solve?

PDA at Bangor Working with Ebook Library (EBL) First trial –October 2010 – February 2011 –Ended when money ran out! Second trial –October 2011 – ? –Until money runs out!!

How PDA works Loaded 80k MARC records from EBL Selected from 200k+ titles based on publisher, date, language, price Users don’t know these e-books are not owned by the library… yet First 3 uses treated as short term loans 4th access triggers a purchase

PDA at Bangor E-books are clearly marked in the catalogue Access is not mediated After 5 mins of free browsing users are asked if they want to continue After confirming users have access to the e-book for 24 hours Unlimited simultaneous use (almost)

Some early findings Purchased 541 e-books through PDA in 12 months 1/3 of e-books bought through PDA are titles we already hold in print 10% of e-books bought through PDA are recommended course reading material

E-book is more cost effective 5 print copies bought at £ –Checked out 12 times this academic year –Checked out 30 times last academic year E-book outright purchase at £27.62 –Accessed 66 times this academic year –Accessed 199 times last academic year –3 x short term loans + purchase today would have cost £56.60

PDA pricing Purchase e-book at list price + VAT Short term loan : 5~20% of list price PDA purchase = 115~160% of list price If 1 or 2 uses pay 5~40% of list price Pay nothing if a title is not used

Auto-purchased e-books Used more often than e-books bought before PDA Between October 2010 & September 2011 –Average unique access to auto-purchased titles : 16.3 –Average unique access to already owned titles : 4.8

Number of access 2010 & 2011

PDA vs outright purchase Estimated cost if all titles accessed were purchased upfront : £404,385 Estimated cost if all titles accessed more than 5 mins were purchased : £229,318 Actual PDA expenditure £69,303 Average short term loan cost : £5.97 Average cost of auto-purchase : £52.17

Challenges How to manage demand Supplementary selection method Sustainable PDA model? Consortium arrangement? Should we mediate more? PDA of e-books is here to stay Enhance student experience!