It really depends on what ‘extras’ you want. It’s the extras that add up. The actual show fees there are pretty average for any AA show. What ends up costing so much is the trainer fees, up charge if you get your feed and shavings delivered, groom fees, hotel or house rental, golf cart, etc.
There are people who show and compete there on a budget. When I was there, I met a lovely mom and her two kids who came for one month every year. They stayed far away from WEF (I believe they were down in Boca, but I’m not 100% sure). The kids and her did all the work, they didn’t have a trainer or grooms. Once a week her kids took a lesson with a trainer to get some pointers. It still cost her a lot each week, but it was do-able and she said because they were from the Midwest it was really the only showing the kids did all year.