$13 gets you 98 pages of some of the Manleys greatest adventures. This book covers the years 2007 & 2008. A great (cheap) introduction to Manley Days.
Manley Days: The First Two Years.
$16 gets you the first two years of Manley Days (thus the title, duh!) This collection has over 250 pages of comics, a good summer beach read.
The Complete Manley Days.
$25 gets you EVERYTHING! And I mean everything. This book has all the strips included in the other two books, plus never before published strips from 2009! Plus every strip that was never finished, and sketches, and a 24 page/24 hour comic featuring random stories about the Manleys. All total this is a 448 page collection, well worth the money.