That's the third iMac since starting using LWC/WC and Avon-Weather.com in 2011. I think there have been five iMacs, one (maybe two?) tower, and one pizza box Mac since jumping from the Commodore VIC-20 to Apple.
The Soil Station was a PR kerfuffle. My memory is fuzzy, but I was contacted by a third party firm doing market research/advertising/marketing for Davis. They had Davis send me the Soil Station to use and write an article and reviews. Somewhere along the line (12-18 months or so later) I received an invoice for the full price, or a return shipping label; my choice. I contacted the PR firm, who had been dismissed by Davis and of was no help, and then I called Davis themselves.
Davis had the record of sending me a unit, but that's about it. No freebie, nor any discount offered, no article or review. Quite a bit of back and forth later, and I ended up purchasing it at wholesale cost, which was actually more than Ryan Wilhour's cost less shipping. So, no, not free...