[soulfuldog]

Generally new ebooks are around £8-12 in the UK. Then, usually below £8 once the paperback is also out, and the price often falls to below £5 eventually. The price of ebooks does appear to be a bit less elastic in the US than it is in the UK.

Not including those books reduced to £1.99 or less, this is a fairly random selection, showing UK Kindle / UK paperback / US Kindle price:

A Little Life £3.66 / £3.85 / $12.99
The Year of the Runaways £3.80 / £4.00 / $13.99
The Curious Incident Of The Dog In The Night-Time £3.99 / £3.85 / $8.57
Tinker Tailor Soldier Spy £4.49 / £6.29 / $12.99
Make Me £4.99 / £3.99 / $14.99
The Cuckoo's Calling £4.99 / £5.59 / $9.99
I Know Why The Caged Bird Sings £5.99 / £6.29 / $7.99
Where My Heart Used to Beat £6.99 / 7.99 / $12.99
The Girl on the Train £6.99 / £5.59 / $12.99
Slade House £7.99 / £7.99 / $12.99
Even Dogs in the Wild £8.99 / £5.59 / $13.99
The Alchemist £9.60 / £5.84 / $11.99
After You £9.99 / £5.59 / $12.99