The price... well... thinking about how much I've spent on FOW books...
Let's see, I've used Stars & Stripes for Mid War period and then had to buy Africa 2.0
The same for D-1 and Hell's Highway and now the Turning Tide book if I want to play Late War according to most recent (and legal) rules.
(the S&S, Africa and HH are hypotetical since I don't own them... but I bought D-1 and now had to buy TT for some lousy 10 pages of rules!! Just to get you the idea of how much a FOW player spent in books for the sake of "support"!
So, looking into account, 48 pounds is quite a bargain, ain't it?!