Bexar County Tax Deed Sale - Tomorrow!

Hi Guys - 

Anyone going to the the Bexar County Tax Sale tomorrow? 

I've been doing due diligence on a few properties that I've targeted.  I pulled the recorded liens against the properties, most of which relate to 1) City of San Antonio fines for mowing and demolition, and 2) Vendor's Liens.

Two questions for the BP Community:  

1) Are the City fines extinguished at tax sale?  I probably wouldn't care as much if they didn't compound interest at 10+ percent!

2) Are Vendor Mechanic's Liens extinguished at tax sale?  The liens start out at $5-6,000 dating anywhere from the 1970's to late 1990's, and usually bear interest at 10-14%.  

I've been reviewing the Bexar County Clerk's website, and man...I just can't tell if they've been repaid, cancelled, extinguished etc.  Other than a website at $150 a title search pop, what can I do to make sure I don't buy a tax sale where I'm shelling out money to pay for unforeseen lien?

Thanks guys,

Kyle