They often have access to off-market properties which gives you less competition.

Are there other, more cost-effective alternatives to gain similar support and knowledge?

I'm just beginning but am considering a bigger commitment in the next five years or so by accessing some or even all retirement funds to buy a building (I'm sure people have thoughts on whether or not that is a good idea!).

It's a huge investment for you - you definitely should have direct access to the PM.

Ready to learn, grow and gain financial freedom and generational wealth.

Becoming a real estate agent is a good idea to gain experience, but you could also explore property management, wholesaling, or working with an investor to build your network. 

It is our goal to deliver all of this in the RTR Academy along with a plethora of benefits to students to include:-VIP access to RTR inventory before the general public-ability to earn back course fees through investing & our attractive referral program-tax, legal & investing advice from our team of attorney, CPAs & investment advisors-no cost SDIRA or solo 401(k) account to invest through retirement vehicles -lifetime membership with no ongoing or additional fees, etc.!

You get a deduction for the contribution, the gains grow tax-free and as long as you use the proceeds for health-related expenses the funds come out tax free as well. 

Then, get this...they SEND the buyer, all my personal financial data by giving them login access to my records.

Looks better for them and gaining a sale and higher property value gives a larger commission.