The offers vary wildly but many of them are a mixture of cash plus second lien equity financing at 0% interest + a 7-10 year balloon.

Any type of DSCR lender should be giving full value after 6 months of ownership...5 years is wild if that's a guideline with lenders you know of.  20 is going to pay off sooner obviously but I have clients many clients taking 40 Year Interest-Only $$ (10 Years I/O, 30 year fixed). 

These JV arrangements can vary wildly, so there isn't a typical structure.

. $100/month avg seems wildly cheap though, and its potentially bc we're talking about different size/scope of properties? 

The quoted figures I've found elsewhere, referring to more geographically divergent locations, vary so incredibly wildly (3% to 30%!?)

An estimated ARV could shift wildly when you go to sell.

there are a couple "rules of thumb" that people use around here.1. mortgage payment should be half of rent2. rent should be between 1 and 2% of home value3. subtract 10% of rent for vacancy, 10% for capital expenditures, and 10% for management fees (basically subtract 30% from rent, but the 3 numbers vary by location) and the difference between that number and mortgage is your cash flowthese are very broad heuristics that vary wildly by market though. if you are interested in learning about real estate investing, spend a lot of time reading these forums and podcasts. you can learn a lot here.

Not everyone takes the same information and does the same thing with it...and there are a number of reasonable reasons for this.Also, not every wildly successful person, in any field (including REI...maybe especially REI), was successful 1st time out.  

There is a great group that meets the 2nd Monday of every month at Buffalo Wild Wings on 44th out by Rivertown.  

The moderate ones just want a little tax revenue and a few mild regulations like no hosting wild orgies after 10 pm.