The sellers have not been responsive when asked to provide that information, which is why I was wondering if it's a typical practice prior to submitting an offer. 

Are you reducing my ability to network and conduct business and negatively impacting my future deal making ability by calling me a "fake investor"?

Splitting the almost nothing with a provider does not make as much sense.

But I may just need to do some more research into the potential opportunities that Corvallis may provide!

If you are paying off a 3 or 4% mortgage, why not just take the additional cash and transition that into assets that provide a 8-10% return.

I invest in properties that provide both cash flow and appreciation.

Keep in mind this is sponsor-provided material, not something that the site discovered through research, nor verified. 

I used to ask the customer to provide me with a SOW.

How complete, low stress, hands off, experienced, all-inclusive the journey is made via the service provider. 

In your scenario, selling the relinquished property for $450K after completing a reverse 1031 exchange will allow those proceeds to repay the intermediary without triggering capital gains taxes, provided all exchange requirements are met.