Mr. X wants to organize a musical show and spent INR 1 Cr on this.  He outsourced the job of selling tickets to an online merchant, say EVENTZ4U, at INR 1000 per ticket as basic rate.   Eventz4u’s commission is 2%.  Eventz4u’s commission turnover is less INR 20 lacs and so not required to be registered.   Being entertainment, GST is 28%.  Now below are queries:

1. Should EVENTZ4U collect INR 1280 from customer?
2. If so, as such it is not his turnover, how to reflect in his return? 
3. If to be treated as pure agent, how should he reflect in invoice / ticket?