The lease on my 2016 Smart ED is over so I have a pair of used WeatherTech Floorliners for sale. Both are in very good condition (I left them a bit dirty for the pictures so you'll know they're used). They'll fit a gas 2008 to 2015 Four Two and a 2016 ED. $35 for the pair, plus shipping (runs from about $20 (northeast) to about $45 (west coast).
If you’re near Cape Cod, you can pick ‘em up and save the shipping.