Include a $1 scratch off lottery ticket and say "thanks for not gambling with your home purchase"This will stick in their mind better than a simple thanks for your business card.Congrats on the sale!

How ever, when I was younger I invested in bitcoin(more like gambled).

Never gamble on appreciation.

Is it a really nice area of Temecula or Corona, which will almost certainly still be really nice in 20 years, or do you want to make more of a gamble and go for a place that seems like a bit beat up now but on upward trajectory?  

If you have to cycle thru a few tenants, it's going to be rough.The area is not good where you're looking, but for a decent house and a decent tenant, it's probably worth the gamble.  

@Ben Leybovich , it certainly could be, but that is always the gamble isn't it? 

Its not a family destination and people are not flooding there anymore because of all of the surrounding states allowing gambling.

I'm not here to gamble on hypothetical numbers or what the future may hold.

Still, I guess if you want to grow you need to make some gambles and incur some added expenses(?).

This will help them and save your butt from a lawsuit.You gambled (blindly), you lost and you stand a chance to get out intact.