In the last week Apple have increased the tier prices due to the weakening of GBP against USD. This has meant that all the Rockfax App packages have increased in cost by quite a bit. Do you have any intention of lowering the tiers so that pricing remains at the previous level.
As the primary market of the app seems to be the UK surely this makes sense? With the current increased prices many of the packages are now more expensive than the books. E.g. West Country Climbs RRP is £24.95, some places sell it for £19.95, but the app package is now £25.99.
Reverting the tiers keeps the price the same for UK consumers, and Rockfax don't lose any money.