What are the essentials I need to determine if it's worthwhile?

Also, doing some research to find yourself a good realtor is well worthwhile.

That's what has people think the conversation is worthwhile - what's in it for them?

I've used it a little while looking at places in the market that I live (Roanoke/Salem VA) and there are generally not enough results to make it seem worthwhile. 

I would say it may be more worth while to focus on increasing your W2 income than looking for another small side hustle (since you’re already investing in real estate on the side).

Is it worthwhile to get a water heater with long warranty or lifetime warranty?

This one does not have the numbers, for that reason holding it is not a worth while investment.

I've made my money back and then some, so it was a worthwhile investment for me...

The only HUGE downside to that, is I have to relocate every year and it'll take 5 years before I see any kind of worthwhile profit, assuming everything goes beautifully; which lets face it, wont. 

That's the reason I used most pessimistic to most optimistic estimates in APOD analysis.And I also want to know if it is insulting if I go with an offer based on my analysis if it is significantly lower than the list price or is it still worthwhile making an offer.