I purchased this yesterday (Via Facebook) and spent a good solid 14 hours trying to make the best use of this. I would say it's definitely not worth the current $$$ I paid for only 24 hours...
With that 14 hours, I was only able to level around 3 weapons to gold, the 141 Assult Rifle, 1 shotgun, and the riot shield... If you do that math that works out to about $10 USD a gun... That's if you want to spend a solid 14 hours with minimal breaks... doing nothing but grinding and killing bots.
On Top of all of this, you run the risk of getting your entire account banned... Killing bots takes to long. If Banek192 wants to reduce the price, maybe 1 month for $35, but for 24 hours only, I don't see how it's worth it...
Does it do what it's supposed to? Sure...