But I am worried that a starter home idea means buying and then trying to sell down the road while being fleeced by RE agents in transaction fees again an again as well as having hard time finding a buyer (somehow SFR houses unlike townhouses are more popular and sell fast).

Well for starters your returns are infinite.

For starters, you want to build a passive income producing portfolio so you are looking at buy n holds.  

I think it MAY affect the first time buyers in starter price homes in many places because increasing the monthly payments even a little may knock out a few people.

I am both an agent and investor and have put several investors into starter homes as rentals here.

Farther out, it is mainly starter homes and lots of land.

Furthermore, I found myself looking into this and it seems like a good starter investment of time and energy so I don’t know why you’re trying to put him down.

Well, for starters, not everybody is going to see or even receive your first mailing.

Oh well... you got some fire starter for your weekend BBQ. 

For starters, unless a package was signed for, there is no way to prove the package was delivered (was it delivered or stolen off the door step?)