There’s a WPMU premium plugin called Supporter, which you can use to achieve two levels. But not three. I think that’s the case, but someone may want to correct me!
Downside is you have to pay to “subscribe” or download these premium plugins @ $79 / month. 
Supporter premium plugin:
http://premium.wpmudev.org/project/supporter
There are several commercial plugins that create membership levels. You’d probably need custom code to connect the levels to the functionality you describe.
If you figure it out, let me know. 
Or contact me if you want to pool resources.
Hey Peter,
Those are all WP plugins and not WPMU ones.
I would steer clear of them.
The Supporter plugin I listed is WPMU-compatible (and as far as I know, BuddyPress-compatible, although I haven’t tried or bought it myself! hehe).
Those are all WP plugins and not WPMU ones.
I would steer clear of them.
Wishlist claimed to me their plugin works with WPMU/Buddypress. Haven’t tried it yet, but I trust the MU/BP developers did not break the basic registration process.
Also MU/BP is obviously a big potential market for these plugins, so you can kinda expect they make sure they work.
You can go with Wishlist and let us know how it goes!
The plugins on the link you listed should clearly let someone know if it is WPMU-compatbile or not.
thanks for all the replies, i will try those plugins.
my blog plateform name is “blogific.com” can I maybe instal three budypress ( blogific.com/basic , blogific.com/premium and blogific.com/gold ) and the addresses off the users blogs will be http://*.blogific.com . Is this possible?
thanks,
@paulrostorp-1
You’ll need 3 different wpmu installs to run 3 different bp installs.
If the first install uses http://*.example.com then others can’t use this type of urls. But make sure you search and/or ask this question at wpmu forum about installing multiple wpmu.
@socialpreneur, would that get paulrostorp-1 any closer to what he wants to achieve? That whole approach sounds like a dead end to me.
He wants 3 account types with different allowed numbers of blogs and upload limits per account. Creating three separate MU/BP installations doesn’t solve that, it will only make it harder to manage those membership levels.
I think he probably needs an additional plugin that adds account settings for # of blogs and upload limits to different classes of members as defined in the commercial membership plugins.
Is setting the number of blogs allowed per user possible now? Are there “hooks” to make it possible? Idem dito for upload limit.
I’m not a PHP coder, but I suspect it’s doable. I plan to study up on plugin creation etc. second half of this month. I’d like to have this type of functionality myself. Any suggestions and contributions appreciated.
Here’s a start to get you part way there:
https://wordpress.org/extend/plugins/limit-blogs-per-user/
Note: I have no idea whether this plugin works with newer versions of WPMU and BP
Also, you could modify the code found here:
https://buddypress.org/forums/topic/limit-amount-of-blogs-a-user-can-register
Thanks Jeff Sayre! The plugin claims to be compatible up to 2.7.1 and explicitly mentions Buddypress, so that looks promising.
@paulrostorp-1, don’t count on me to write a plugin anytime soon! I’m not a PHP coder. I want to look into this, but have some other issues higher on the to do list.
