It depends on the calibre of the show itself. If you mean big money like $50,000 etc. then try youtubing USJHA hunter derbies, or Canadian Hunter Derby Series. These would be like a grand prix in jumperland. The fences are higher, the horses are the best of the best, mostly pros riding (unless it’s specifically jr/am).
If you mean big money like $5000, then you’ll probably see the same horses competing who showed in the regular classes all week. The course itself may be a little scarier, more fill, with higher options, and handy turns and nice gallop jumps will be rewarded.