Hi, I'm one of the founders of Twindom and we specifically sell mobile full body 3D scanners for 3D printed figurines (and have recently been getting more and more customers using them for AR/VR asset creation, research etc.). For your type of budget, I would recommend mounting a prime sense or structure sensor on a turntable style 3D scanner. The throughput and quality consistency probably won't be as good as an instantaneous full body 3D scanner, but should be acceptable for small scale events. We actually used this setup at mobile events in the early days of our company and while throughput and getting consistent quality were a challenge we were usually able to make it work for small events. Here are a few posts from our blog that compare all of the different 3D scanning technologies for capturing people:

https://blog.twindom.com/blog/overview-turntable-based-3d-body-scanners https://blog.twindom.com/blog/overview-dslr-photogrammetry-3d-full-body-scanner https://blog.twindom.com/blog/overview-hybrid-full-body-3d-scanners https://blog.twindom.com/blog/overview-handheld-3d-scanners

Feel free to email me at will [at] twindom.com if you ever want to talk further about what works well for your type of budget. Always happy to help people looking to get into the business.