My $10k example was admittedly unrealistic.However, by way of further background, @Dustin Heiner wrote an excellent article on this topic on his website masterpassiveincome.com titled "What to Do When A Buyer Backs Out From An Assignment Of Contract".In it he suggests a scenario where the assignee decides not to proceed, perhaps after discovering a big ticket repair item that would cost significantly more than the portion of the assignment fee held in escrow. 

Went into effect several years ago (2021).

recessed/sheetrock is a low cost, no brainer improvement that sells.

Also, most of the stuff your list is low cost which is great, but once you start getting the deals and paying yourself back on the direct mail, double and triple those actions too (of course when you to a place financially that you can do that effectively).  

In general ADUs in single family zoned areas add less value than the hands off cost to add the ADU.  

Louis offers affordability, cash flow potential, and emerging market opportunities but also presents management challenges, unfamiliar markets, travel costs, local regulations, and crime rates.

I'll sound like a broken record, but STRs definitely hold a lot of hidden costs and regulations.

I’d just have to figure out how to come up with rehab costs, and learn about seller financing a bit more within a short time frame.

Any options, especially green ones, on construction cost savings.

Key features we’re looking for include:1.User-Friendly Interface: Easy to set up and use, as we want to minimize the learning curve.2.Automation: Capabilities for drip campaigns, automated follow-ups, and segmentation based on investor interests and engagement.3.Analytics and Reporting: Detailed insights into email open rates, click-through rates, and overall engagement to help us refine our approach.4.Cost-Effective: We’re a growing business, so we’re mindful of costs, but we’re willing to invest in a tool that offers great value.What has worked well for you?