8th Wall plans now include unlimited views (with certain restrictions, please see 8th Wall | Pricing and Plans - WebAR, AR, WebVR Developer Tools and SDK, What are the restrictions on unlimited views?) section.
However, also keep in mind that an 8th Wall project requires a Commercial License if you are planning to use it for any commercial purposes and/or paid use case. Ex. 1) You are an agency and you have a contract to develop a WebAR campaign for a client; 2) You are a company building a WebAR project or integrating 8th Wall technology into your platform.
If you are hosting your WebAR experience with 8th Wall, it lives in a global CDN with 450+ points of presence around the globe (Our hosting systems are backed by AWS CloudFront) - it can handle massive amounts of traffic