FYI: People offering to buy minecraft tickets want you to go so they can sell an in-game item on ebay for 2-4x the cost of the entry to the event.

Look up minecraft experience on ebay and you'll see that there's a huge market for this in game item. Anyone offering to pay for your ticket is not disclosing this because by you attending the event, they receive a promo code for the in game item making them money. If you are okay with the buyer capitalizing on you then go for it.

You could go to the event and pocket $50.