What are the largest wholesale operations you know of?

[Matthew Bailey]

I am looking to scale my wholesale business (I invest in land not houses) so I'm looking for successful wholesale business (can be homes) that do significant volume to model my business after.  I figure the BP community will know of large scale wholesale operations (like 100's of deals/year).  Then I can look to those business as a model for what mine could look like.  Perhaps those business have their own podcast, group, etc that I could become a part of to help shorten the learning curve when it comes to scaling.  Even if they have no educational material it would be great to hear examples of people who really built a proper business out of wholesaling.