Was looking for a cheap Sonicwall on eBay and thought there is no such thing. I got an old Pro 300 which is more than rubbish and the NSA ones aren't that cheap, eBay or not.
Then I found a Pro2040 .. not a bad one, especially with Enhanced OS .. According to the seller it had Standard OS but I hoped I can convince our account manager to send me that firmware - so I purchased it for £70 / $115 ... Seems too cheap so I expected a broken one ... Then it was transferred into my account and I was shocked ... if the warranty seal isn't broken (will receive it in the morning) - then bloody hell, it certainly has some nice goodies attached - including Dynamic 24/7 support and firmware upgrades - can't get one cheaper than that - that's for sure..