Going out on a limb here and assuming you want to be vollyed (hired back and forth) to earn money and upgrade. Being volleyed is not the most effective way of making money. I would recommend partying or farming for money. Here is a list of farms, before hitting make sure they are inactive because occasionally some people become active again and may hit back. To party, join a club, and hit the party. If you can, I would recommend joining Cat Cafe or Pizza Pop (Art) because they pay the most. You will get money once the party is successfully completed. Here is a link to a thread naming some clubs that have no stat limit. You will earn 2x as much money per hit if you have 15m x your kcs in tutors. Once you earn the money, and probably before too, check out some of the threads in the strategy and guides section of forums This guide explains how to get started I'd check it out first.
Lol 500b.. I remember when tequilaPop was 500b and I thought damn, who ever gonna be that expensive
I know sounds good but there are much better ways of earning money than being volleyed. Not many people are going to want to invest 500b in someone they don't know if they will become inactive. The way the tute market is the normal price is your kcs(strength+Intel)/2 than times by 1b. With that said you would need over 1million combined stats to be correctly priced. As jerk said all that stuff is better