Basic advice you'd follow for any auction. Know what you are bidding for, calculate the amount of interest and don't pay more of a premium then you can recoup.
Becky, I researched this a few years ago. It is an interesting and fairly low risk way to earn almost 10% or better on your money. The drawbacks are you may end up owning the property (just make sure you want it with any strings attached), and the money is tied up for more than 3 years, and there may be a lot of paper work involved. My grandparents had a cabin in Evergreen somewhere in Brook Forest that was purchased with a tax lien, I think they only paid a few thousand.
It is an auction though, and you are bidding with people that mostly know what they are doing.
If you want to be, press one. If you want not to be, press 2
Republicans are red, democrats are blue, neither of them, gives a flip about you.
Yeah a couple from Lakewood ended up with 2 non buildable props near me and now they can't sell them for what they paid in taxes due to the devaulation.