In a public-land state the cost of hunting a spaniel is a licence and some fuel. In Iowa the licence is the small part. The realistic options are asking permission farm by farm, which costs time and a certain amount of nerve; paying into a lease, which is the expensive end; or using ground enrolled in the state's habitat and access programme, which pays landowners to open private acres to public hunting and costs the hunter nothing beyond the standard licence and habitat fee.
That last option is the one worth knowing about before buying this breed here, because it is what turns a Welsh Springer from a dog with a frustrated job description into a working animal. Enrolled tracts are mapped and published, they change from year to year, and they are frequently under-used simply because people do not know they exist.
The commercial alternative is a hunting preserve, where birds are released and you pay per bird plus a field fee. It is a legitimate way to give a young dog experience on a schedule, and it is genuinely expensive on repetition. Most Iowa owners end up with a mix: preserve days early to build the dog, enrolled public-access ground once it can hunt.