Whenever I first start working with an investor it's not uncommon for me to send them less than ideal investment properties in an effort to find out what they typically pull the trigger on.

Situations not uncommon in the current market are those where the land contract buyer has made all payments, complied with all requirements of the agreement, and paid all property taxes and insurance amounts when suddenly, they have a foreclosure notice on the door.

It is not uncommon for syndicated MF deals to net the investor an 8% cash pref and a total return of mid teens or higher and if the syndicator uses accelerated depreciation you will get a K1 with depreciation expense to offset most if not all of the income for first 7-8 years. 

Its extremely uncommon for the court to hold the tenant financially responsible for the remainder of the lease if they bail early...it just doesn't happen.

It is uncommon for a bank to allow them though if you are doing any type of traditional financing https://www.biggerpockets.com/search?

Its not uncommon to find properties in the 1950s range. 

Land and housing is very very affordable here and it's not uncommon to pay <$50/sqft.

So it is not uncommon. 

I’ve never taken out a hard money loan but I read ~12% and 2-4 points isn’t uncommon.

It's not uncommon for a HML to lend 80% loan to value on the purchase price, and 100% rehab cost.