(I think I can build 30 spots)Questions:-what is the biggest reason in the cost variation for those who have done it?

Ask for a trials from some of the more popular solutions out there and use that to evaluate the different capabilities.

Since its not FAS (first and seconds) you're going to run into a lot of variation and less desirable pieces, so a lot of waste. 

Does all land contracts have balloon payments? Can a land contract say just be 20 year flat with a prepayment penalty? Just to get guarantee payments for that length? Thank for any insight. New to all this..

I think one thing that makes real estate so interesting is there is so much variation in valuations that one can be rewarded for the time invested in searching for a deal, and with more experience a person can discover micro-areas that have better value within a community.For example, 2 years ago there were some good deals in College Park (in PG County) - within 1 mile of the metro, rents above $2,000 and prices below $275,000. 

It can provide coverage and can transform into a dependable emergency fund over time, and even serve as loan for the future when it matures over the course of its policy design.It's always good stategize and determine how much maximum premium you can put into a cash value policy without it turning into a 401k, and just serving as a dependable cash reserve --asset.And, of course, there are so many variations of these products.

Otherwise, it's a little bit of trial and error.Once you have the subscription you should be able to get the smart pricing from guesty turned on which will sync across calendars.

So the question is - how long do I continue this trial?

The best place to start is referrals, but it does come down to trial and error.

It appears that much of this is a variation of a Ponzi scheme.