@David Flores in my opinion if your goal is to sell any property at 50% of market value just work backwards from there on how much you would like to make.
in your example of this property lets say you wanted to make $5,000. that property would have to retail at $34,000 in order for you to sell it at 50%($17,000) pay the $10,000 in liens and pay the owner $2,000
I think everyone is going to be different on what they think their time is worth so if your happy putting up $12,000 for liens and purchase to make $3,000(25%ROI) because the market value is $30,000 then do it
at the end of the day you have hungry new investors willing to make a $1,000 and get some education then you have pros that won't do a deal for less than $10,000. you just have to decide what your willing to accept both in monetary and education because both are currencies in the investing world
@Brandy Horkey I second what you've said, I know in Florida that the county appraised value is strictly for tax purposes and not what the actually market value for a property is. I have market values and county values be $100,000 off on a $250,000 house.
I would revisit that property if it still available by contacting a land agent and have them give you a option of what would be market value.