The crates like that one always suck. They add those unlimited rewards with better odds so you will get those most of the time. So you might have to spend $100 or more to maybe get it. It's why a lot of us won't pay for stuff like that in the game.

To add to what imortals said, with every event crate rush you need to check two things:

1. The probability of getting the main item (probabilities are listed when you check the detailed info in the event).

2. Whether or not there are items in the crate that have an infinite quantity. If there are then getting those items does not remove them from the crate, so you can get them again and again forever (which is not what you typically want :-) ).

By the way it looks like you accidentally created multiple instances of this topic. Best to delete the other ones.

Hello! Remember that you can check out the probabilities before participating in such Events by pressing the ⓘ icon at the top of the Event window. Thus, you can calculate your chances and decide whether it's worth participating.

I'm sorry that you haven't won the Weapon yet. Don't forget that the current Derby Event can bring some Event Tokens (30, to be precise).

If you're playing on mobile you probably don't want the weapon. They designed this weapon with no consideration of it being used by mobile players.  It's nearly impossible to use on mobile unless you have 2 thumbs on your right hand.

Charge Rocket requires some skills indeed, but the results can be really worthwhile! 👍