More like non-existant. We run a 1440 with 4000hrs and a 1660 with 7000hrs, as well as some other stuff. Very few of the 1644, -66 and -88 series made it here, don't know why, but it seems most dealers just stopped selling combines after the 1640-60-80 time and then got back into the game when the 2100-series came out. To give you an idea, in a 60km radius from my home, there are about 40 Axial Flows, of which two are 1644's. The others are all the previous series or 2188_2388's. Even the later 1600-series are scarce. Of the 40 I mentioned, I'd say about 15 are 1400-series and 20 are 2188 or 2388.