Just been to my local ASDA and they have the Indiana Jones Compete Collection on DVD (5 discs) for £25. This includes special editions of the 3 original movies, plus the 2 disc special edition of "Kingdom of the Crystal Skull". Seems to still be showing on their website for £32.71. Link is to their website showing this price, but is £25 instore.
The closest to this I can find is £29.99 on Zavvi website.