And that extra $40-$50k a year will be life changing.

You're correct, many investors think that using an experienced agent is just an extra expense.   

I cannot afford another above the $16,000 which is why I told her $15,000 was the budget.I also stated to let me know of any extra charges that come up so I can watch the number.

In the case mortgage foreclosure, I usually offer to pay for the existing mortgage and give them a little extra to move.

Should I take extra steps to verify their identity and legitimacy?

Class C and D areas/properties will always cash flow better on paper, but on paper things like extra repairs, turnover, evictions and such are often not taken into account. 

@Joey Chalhoub This decision should be read narrowly to address statutory frameworks such as MN where state law permits it to take property to satisfy real estate taxes/penalties/interest, sell it, and keep any surplus outright.

then theirs charges 1000s in extra fees. 

I Enjoyed the extra viewpoint.

What your describing is built into the YSP, not extra points out of your pocket.