I guess they did not clean the unit for over 3 years and did not call the old property management company when things started to break. 

As far as a company to use for skip tracing, find one that has flexible pricing and no high-volume minimums if you're just starting out.

Look at what happened in FL when they started using Chinese sheetrocks.

I've seen 1-2 months rent used in the past, so that might be a good starting point. 

When I saw Antoine Martel from FlipSystem Posting Advertisement on social media like this:"You only need $10K ~ $30K to invest in RealEsate doing Flipping and make 100% ROI in 4 months""My clients in FlipSystem averagely spend 4 hours in managing each Flip Project""We help you to quite your JOB in couple of months by doing Flipping""We have few hundreds of success happy client - (Actually there might be few hundreds of clients losing their hard working money)"And lots of other advertisement stating: "Easy, Fast, Low RISK" in their programI thought: "Wow, doing Flipping is so easy and profitable and low-bar to enter in, I should join their program and start make money!"

Apologies, I'm just starting with real estate, however if they're offering a guarantee, isn't that a good thing?

If you are out of state, I would definitely recommend establishing relationships with contractors, property managers, agents, etc. before you start to make sure you are set up for success. 

My name is Benjamin Latta-Singer I started using bigger pockets about two years ago but never did much with it.

No current liens but these properties have tax deeds, not warranty deeds if that matters.That as-is value is going to make obtaining financing more difficult for sure.Financing options drop off pretty steeply below a certain dollar amount because foreclosure costs for lenders can be significant.Your best bet may be to connect with some local private lenders (local investor meetups/referrals are a good starting point for this) or local banks.

I’ll start attending our local meetups though just to start building that network.