It’s cheap insurance for a costly potential, depending on geography.

You can expect to pay about $5k per year or so, depending on where your unit is and how much you pay for it.I can give you more accurate details and help run numbers on your unit with you, if you like.

The choice depends on their priorities simplicity now or long-term tax advantages.

It depends, we recently had a deal where we got under contract for $26k, We new AS-IS there was a strong possibility to sell it on market for $95-100k.

Remember to always budget 10-25% (depending on age/condition) extra as a buffer.

It will depend on what your goals are, but if you'd like to scale fast, you could leverage the $100k cash to buy 2 or 3 duplexes in lower priced markets that have higher rent/price ratios.You could use these properties to learn the ins-outs of OOS investing and use these to build your network and confidence in the market.

I guess it depends on your risk tolerance and your ability to find a better deal than the one you already have with the equity you are pulling out.

Depending on the cash flow for the property, you are looking at up to 75% of the appraised value. 

Just depends on your experience level and the network you have.

It can do better or worse depending where you are, but these are some general ideas of what you can get out of it.