I notice that the graphic novel prices are currently higher through the iPad app but if I go to the online store I can get the digital version usually for £3 cheaper and then it shows up on my iPad. Lovely.
Is this a deliberate pricing policy to reflect the costs you have to pay to apple for handling digital content?
Bu the way, thanks for having the feature that stops me buying digital content I already. Saved me another £9.99. 
Hi Eamon - this isn't actually a deliberate pricing policy change, we do actually try to harmonise prices across all our retail platforms and recently reviewed (and in a number of cases lowered) our Prog, Meg and subscription pricing. It's due to Apple putting up the UK price for some of their pricing tiers recently. We will review the digital graphic novel pricing very soon to bring the UK pricing back to previous levels across all our platforms (i.e. to £9.99 in most cases).
In the meantime, as you noticed, you can still purchase digital graphic novels at the original price point via the 2000 AD web shop
https://shop.2000ad.com/catalogue/graphic-novels, and any purchases made there will be available to download and view via our iOS 2000 AD app (in any of our 2000 AD reader apps, in fact).
BTW we're aware the 2000 AD web shop is quite slow at the moment, but are currently working on some major performance optimisations which we hope to be able to put in place soon.