Very very much depends on who, where and what. If you are lucky, like myself, you end up getting to know a group of local hunters and its minimal cost. My German friends come across to hunt in Scotland on my ground, and I go there with other friends to shoot boar. Cost is essentially a few bottles of Malt to lubricate the friendships. Mostly we are doing deer or boar management and the focus is on achieving the cull. Mostly on driven boar is 20 guns, and 10 dog handlers and the bags are typically half a dozen to 20 animals. Its the equivalent of small informal phaesant shoot.
Trophy fees are very much a question of who owns the land and the shooting rights, and also government / state involvement. Often on state lands there can be quite high trophy fees for particular class of animal.