The only way you'll find a reasonably priced nightclub/bar is if you meet, befriend and exchange contacts with the people who are in charge of the clubs, bartenders, DJs etc. - so instead of you spending hours online trying to find a cheap nightclub or anything you should just go to Tokyo, wear your best outfits, be friendly, make friends with everyone and you'll have free drinks, free nightclub VIP entry and the greatest time for free.
It's either that or being a jerk and paying for it, no pun intended.
Josh