The extraction of surplus value is theft!
There is no such thing as "surplus value."
There is only value.
So we should all work for no reward?
You're forgetting about supply costs and marketing costs.
I have no idea what you mean by "surplus value."
Marxian theory of labor's relation to capital accumulation
No I'm not. Some of the surplus value will be used to reinvest into the business, some will go to the capitalist. The workers themselves should have control of that money, not the capitalist. The workers can decide what money to reinvest and what money to pay themselves. No exploitation with workers control. You do the work, you enjoy the fruits of your labor.
If I don't take surplus value from my work then I'm working for cost price so I'm working for free.
What does that have to do with this?
If you produce $100 worth of something per hour, but your wage is only 7.25, that's a lot of money YOU made that YOU don't recieve