Looks amazing and fast, congratulations. If you don't mind sharing, What is your tech stack ? How many developer hour were consumed developing it and how many to maintain it ?
We wrote our own JavaScript framework called alive.js. We're going to open source it once we've got it documented properly. It's similar to Vue, but without the virtual DOM. Instead we keep track of "update" functions. It also has some nice async lazy loading capabilities which helps keep the experience fast.
Development time was about 4 months to an MVP. 2 developers, but one was an absolute rockstar. Maintained by 2 guys now (1 of whom is an original developer). Also have a small sales team, composed of 5 contractors.
