I bought them both in 2019, so it's not a fair comparison to today's market -- especially if you're comparing in Greenville where the $ amount of housing prices has jumped much more.  

ARV on my house is about $200K right now as a comparison.

My grandfather has lived in the home with my late grandmother for the past 30 years and is still currently living there but never held title to the home, so I'm not sure if that makes any difference in regards to how he will be taxed on the proceeds in comparison with his son whom has NOT lived in the home for 2 of the last 5 years.

You probably just need to wait unit your sales are a year plus old and they will stop looking at them for comparison. 

Regarding comparisons to other countries, I have worked with the Japanese market for over 8 years. 8% is definitely high yield.

This is especially true if you have certain deductions that are higher than average.If everything looks fairly average in comparison to historical numbers then you are fine.

You can learn a lot from these in comparison to features, extra rooms/garages/bathrooms, etc (try to keep them as similar to your subject property as possible).

The principal is being pre-paid in comparison to how the loan is amortized, which is the schedule of principal and interest payments and allocations of the same.

This could give her a starting point for comparison.3) Make sure she realizes she would have to furnish the unit.

I base this on $/sqft comparison between the two.