The short answer is that the breeder will charge as much as they think someone will pay.
You should be aware of two things: Crossbreeds should cost a great deal less than pure-breeds; pitbull crosses are just as illegal in the UK as full pitbulls.
You should be aware of two things: Crossbreeds should cost a great deal less than pure-breeds; pitbull crosses are just as illegal in the UK as full pitbulls.