Earlier quoted context omitted.
I'm having trouble making sense of this. It sounds like you want to say you won't take the bus for a journey under 200 metres - which is fine. But the meaning of your sentence is something like: if you want to travel 2 km and the bus stops every 200 metres means you won't take the bus because it would cost too much? How come? And how did you arrive at that 200 metre threshold? edit: I completely failed to appreciate…
If the bus stops every 200 meters, it has a chance of stopping 10 times, which takes a lot of time. If the weather isn't prohibitively horrible, I have to wait for the bus to arrive and if there's traffic, chances are I'll be able to reach my destination on foot faster than by bus. It's fine by me, but it seems that I'm just not the target audience for busses.
In central areas where demand is high, busses usually come every ~5-minutes. Even further out in the suburbs, the wait times are 8-10 minutes.
Bus rides are £1.75. You can take as many busses in a day, and it automatically caps at £5.25. You don't need coins, you pay using contactless credit card, or oyster card prepaid cards.
Unless there is service disruption I find the bus is at least twice as fast as walking, typically a lot faster.
I walk if the distance is less than ~30-minutes, but if I do take the bus I never feel like I've wasted my time or money.