There is a load of rooms designed so that people who used cash or are higher levels cannot join. Also, you get stuffforgets of cash when you level up. Grenades can also be awarded randomly. In other words, buying stuff is not even the best option and you are over reacting, saying that you MUST pay $80 just to "play well"
I haven't bought jack stuff with real money and I do decently, even against purchased weapons. I also have not seen in 2 years of playing a single person using a G-Coin armor set. Also, you get around 250 bonus credits as a bonus per game. You can buy weapons and do well without paying anything. If you are so bad you insist on saying it isimpossible to play without selling your soul, then don't bitch about it and whine how "it is inoperable without buying this and that"