[CWatkinsNash]

Ratios for the last two years, according to my calibre tagging:

Total Acquired:Bought
100:30
70% of acquired books were freebies

Total Read:Bought Read
100:60
40% of books read were freebies

I don't know how indicative these numbers are of my norm, because there are two factors that were present last year that won't be this year - the Harlequin sale, and Fictionwise coupon codes. Both of those probably inflated last year's "buy" numbers beyond the previous year. However, this year my disposable income will be higher, so it may end up about the same anyway.

I do not count sample downloads, as they don't go into calibre. Free books are from a variety of sources, and include a large number of shorts and novellas.