We made some good connections there, which helped us tremendously.

They used to have a killer coupon that I would use but now I just buy so much from them that I can get discounts rather easily. 

I take their yearly revenue, discount it 15% and put it in my calculator.

There are some pretty nice discounts on many products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proI really like the alerts feature that can quickly guide you to current topics that might interest you: http://www.biggerpockets.com/alerts

That helps a tremendous amount. 

Market value was $2300 , I gave them $100 discount and waived the pet fee, but I made them responsible for snow removal/lawn care.

I am going to ask for multi property discount. 

Fun fact though, a lot of STRs listed on Airbnb do larger discounts for longer stays so you can find some good deals!

Undeveloped land needs to vetted for proper development and developers will want a lot of that done or a steep discount or long timeframe to get it done with no assurance that it will work.

Here is my referral code that gives you $10 discount If you decide to go for it- 11811.