There are a lot of custom fitters around still. Price really varies depending on the animal, how time consuming it is, etc. You can expect about $10-$15 a day at least per animal for daily care at home, any vet bills, supplements, special treatmant will be billed to you. You will also pay all of travel expenses to shows if you are the only person whose cattle they are hauling, if there are other clients, you will split the travel expenses with other clients. You will pay your entry fees and a show day fee which is generally somewhere between $60 and $100. And most custom fitters will take a % of premiums won in these kinds of deals.
Are you looking for a custom fitter? If so for what kind of cattle and where?