I misinterpreted the rules - developers are actually allowed to charge whatever they like, they're just not allowed to say "Actually you can save five quid if you go -> HERE".
Back in the real world, sales assistants may not be allowed to offer deals unless asked first - I know that my partner was basically given very heavy hints to ask if the sales assistant "had any special offers" before he could offer a deal on a new motorbike. I guess this is the same, without the helpful hints. Some people scour the web for coupons and deals, other people pay the full price (and then get extremely cross when the first screen they see in their new app offers a 25% off coupon, yes you, Capture One, you bastards)
Back in the real world, sales assistants may not be allowed to offer deals unless asked first - I know that my partner was basically given very heavy hints to ask if the sales assistant "had any special offers" before he could offer a deal on a new motorbike. I guess this is the same, without the helpful hints. Some people scour the web for coupons and deals, other people pay the full price (and then get extremely cross when the first screen they see in their new app offers a 25% off coupon, yes you, Capture One, you bastards)