I've bought three properties from auction.com & the last one was the worst! There are some good deals, but you have to be really careful or they will just let deals sit with your money tied up, give you faulty title making a property impossible to sell, and screw up every piece of paperwork.
Do NOT use their closing company Servicelink-they are HORRIBLE and incompetent. We got to closing and they provided the wrong deed. It then took over 80 days to get them to correct it. The closing specialist at auction, Lynette Achong, was completely unresponsive for weeks-my realtor and I called and emailed daily for two weeks to get a response. She was rude and when we pushed, she would threaten to kill the whole deal & keep my earnest money if we didn't stop calling. I told her to bring it on-she wouldn't have a leg to stand on. She was basically mad we used our own title company who caught their mistake. She said she had planned to close our deal to have it count for her April numbers & our insisting on the correct deed was going to mess up her pay bonus... tough, honey... not my problem...
No one will ever let you talk to anyone's supervisor, but when we got to 80+ days and no response for weeks & her threats, they finally elevated it & got it done. It required a director at servicelink to force the title agent their, Heather Moeser, to do her job.
The vast majority of their properties have a problem, which is why the banks use the auction sites to sell them. You have to do your homework and I wouldn't recommend the site for inexperienced real estate investors unless you have a savvy realtor to help you. Properties are sold as is, including title issues, so it requires either a lot of due diligence or such low prices you're not risking much.