Imo it makes no difference at all with inflation etc things go up prices rise etc we all know that,the thing you’ve got to ask yourself is will this particular customer take the increase at the given time.
Some will say this is ridiculous you can’t work like this etc they go up regardless,if you have smaller paying work where’s if you lose a few it’s not the end of the world,think of the same scenario when the jobs maybe 75-£100 each and they can be done hassle free it makes you look at putting prices up on a whim differently.
The press are making everyone paranoid at the moment with coronavirus saying it could lead to recession etc,not all but it strikes fear into a lot of people my opinion at the moment would be don’t increase your prices unless they are underpriced and you are losing money cleaning them when you could be doing better priced jobs.