For those who prefer physical copy.
Available cheaper digitally £15.99 each in PSN/XBL and can buy the trilogy for a discount also DR2: Off the Record is not available physically in NA aswell these are NA imports.
Dead Rising 2
Dead Rising 2: Off the Record
Each sold separately for €19.99/£15.99
Dead Rising Triple Pack
Digital bundle for €49.99/£39.99 that includes all three games (Dead Rising, Dead Rising 2 and Dead Rising 2: Off the Record)
Launching digitally on 13th September, expect classic zombie sandbox gameplay and upgraded graphics presented in 1080p and targeting 60 frames per second including all DLC.""https://blog.eu.playstation.com/2016/08/09/dead-rising-1-2-and-off-the-record-are-coming-to-ps4-next-month/