Library purchases of e-books 2012: with and without Digital Rights Management (DRM)

Library purchases of e-books 2012: with and without DRM
BOOK TYPE e-books
Digital Rights Management (DRM)? average cost
COLLECTION data YES NO TOTAL
Theology & Religious Studies expenditure  € 543  € 543 € 271
number of books 2 2
Philosophy expenditure  € 1.321  € 2.743  € 4.065 € 110
number of books 15 22 37
Arts expenditure  € 35.077  € 51.733  € 86.810 € 114
number of books 298 465 763
Law expenditure  € 45  € 45 € 45
number of books 1 1
Behavioral & Social Sciences expenditure  € 1.474  € 435  € 1.910 € 159
number of books 11 1 12
Economics & Business expenditure  € 1.340  € 331  € 1.671 € 93
number of books 15 3 18
Spatial Sciences expenditure  € 274  € 134  € 408 € 136
number of books 2 1 3
Mathematics & Natural Sciences expenditure  € 15.407  € 11.332  € 26.740 € 147
number of books 123 59 182
Medical Sciences expenditure  € 6.596  € 20.026  € 26.622 € 313
number of books 45 40 85
General & Special Collections expenditure  € 3.715  € 1.796  € 5.511 € 85
number of books 53 12 65
Total expenditure  € 65.250  € 89.074  € 154.324 € 132
Total number of books 563 605 1.168
Average cost of e-book purchases € 116 € 147 € 132