My kid pays around $180 for a track day however he has to come with his own bike and complete riding gear, his body armored jacket, pants and boots cost him close to $1k so with that said that $399 doesn't sound bad at all being they supply the bike, fuel and suit. Being you would be a novice don't be surprised if the first few sessions on the track are at a slow pace so that you can get to know the course a bit and know the proper lines to take through the corners. Safety is #1 priority so they won't be letting you cut loose from the get go.