Many property owners have not conducted research about the comparable sales prices of properties similar to their own.

It just needs to be clear about what each party if responsible for and how you expect to conduct your business. 

Here in KC we have 3 options with a "In Its Present Condition" 1) You can conduct inspections ask for repairs but seller isn't obligated to repair anything 2) You can conduct inspections but can't ask for repairs 3) Waiving the right to do inspections.

Be aware that some states have very strict rules that prevent wholesaling as they deem it conducting a real estate transaction and therefore you need to be licensed.

Anticipate everything, treat your buyer like they know nothing and conduct the transaction as if you might be sued.To start with, you need to identify how title will be held for the duration of whatever contract period exists after close. 

Ethical conduct or dealings is not what you believe is moral or fair so much as what is acceptable in line with laws and customs, accepted practice.

You'll find plenty of mobile home parks in our neck of the woods:)If you want to start doing some market research for multi-units and mobiles (which is a good learning activity to start with), I'd suggest becoming a customer, i.e. a renter, and shop for rentals in Greenville.Look on Craigslist, shopper magazines, websites, etc to see what's out there.

I'd like to acquire lists for probate and non-owner occupied properties and then conduct my first mailing campaign.  

The county treasurer/tax collector conducts tax sales.

You and your QI must review the type of sale (Trustee's Sale, Sheriff's Sale, Tax Lien Sale, etc.) and determine exactly how the settlement process is conducted and then lay out a plan of action in order to have a successful 1031 Exchange.