I've bought at a fair bit at auction as I used to work in one. And yes the quality can be much better. I got an art deco bedroom suite (sadly I had to sell on), a Victorian wind out dining table with three extra leaves for around £150, some dining chairs, a deco side table, an ant chair, all the spare room bedroom furniture etc, etc. I have eclectic taste so it was perfect for me. Even the modern things will be a lot less second hand.
Personally I'd check it out in person if possible and look out for wood worm holes, and watch out for bed bugs.
If you can't view the auction in person ask for a condition report which should tell you of any major issues.
I never did bid in person because I was always working in the office on sale days, I used to leave commission bids, where the auctioneer will go up to that amount on your behalf. Take into account you will pay more than just the hammer price as commission will be on top (and VAT on the commission). The % commission varies from place to place though.
Most real life auctions are continuing where possible just online at the moment.
Happy buying, I'm envious of you (no space here for any more!)