Depends on the animal, the complexity of the issue, the size/weight, many things.
I paid £62 for Boo a few months ago, after she pulled a ligament in her lower leg. That was for the consult and five days NSAID tablets. Before that - £46 to have her vet checked - weight, eyes, ears, heart etc, which was soon after we got her.
One of my cats cost me the best part of £1000 when he was injured after killing a rat. Abscess infection deep on the hip. Several operations, lots of vet trips.
Animals aren't just for life ... they're money munchers too :)