well it's all a bit odd right now - all of the 7s are £150 off but the 8 Pro is £300 off which makes it the same price as the already discounted 7 pro.
Hard to say what will happen when the 9s come out - possibly the remaining 7s will be withdrawn and off loaded elsewhere.
Interesting... How much does the a new model make the price drop by (roughly)?
I'd been considering upgrading but it might be worth waiting now.