Despite this being the only option to pick up the U.K. editions of the three MUMMY steelbooks in non premium packaging I'm personally in no rush to do so.
I might have paid the full pre-order price had the steelbook contained a 4th disc of Extras or if it was limited to 1,000 like the BACK TO THE FUTURE trilogy Zavvi exclusive steelbook but we all know what happened to that one!!! (also later available from Zoom but just 3-discs priced at between GBP 37 - 45 approx. but now OOP/OOS like the Zavvi) . . . so maybe not even full price in that case.
That being said the pre-order price is not outrageous for a really handsome set - 10 quid per film - and will probably calculate to about half the price of the EB offering when P&P is taken into account for that one.
On the other hand it could be argued that the EB offering is worth twice the price as it's twice as nice
The other aspect is of course that this steelbook will most likely be printed in the tens of thousands taking into consideration the 3 blockbuster films inside (worldwide box office for #1 @$416M, #2 @$435, #3 @$405 which adds up to over $1.2B cinema grosses - without taking into account home video etc. - on a $323M combined budget).
The final and most important aspect that needs to be considered and confirmed one way or the other is which territories will be supplying this steelbook complete with 'bossing (as per the U.K. edition) . . . for example, already confirmed by the Germans that their trilogy will NOT have 'bossing
One of these blockbuster films has even inspired a ride (at Universal Studios):-