Overall, very pleased with Sierra's handling of their auctions. I have spent in the tens of thousands at their Auction's this year and they really get some great items through their doors. I personally like their off site auctions at their client's locations. They just are not so congested and are easier to navigate.
It can be hit or miss as to how many people are there and bidding on the items you want. I have found historically that at their larger auctions, there is enough to go around so to speak. You will see many of the same people at every auction and I have made some great local and out of state contacts through that.
Their auctioneers especially know how to engage the bidders and I appreciate that as it makes the task of spending lots of money fun. I recommend paying in cash to save the 3% Credit Card Fee. Also, read up on their auction terms and types of auctions as I always see someone that got confused and ended up buying more then they should even though the auctioneers called out the terms at the beginning. These things move fast and I found it best when first getting started to watch one whole auction before ever bidding so you understand the flow.
The only thing I would really like to see them hone in on is customer service. Occasionally, issues arise and I think it would be great if they had one point of contact or phone number available to assist bidders. This applies more so to their online auctions as there is always plenty of staff available on site. This could be a positive for them as they could follow-up with the larger spenders as well and remind them to get their butts to the next auction.
So great experience! Go buy some stuff!