I don't know about stump grinders, but I did buy a HM129 Saw Mill from Woodland Mills. I would say it took the better part of 3 weeks to arrive. The people at Woodland Mills were not only courteous, they did a great job working with my impatience to receive the mill. About a year later, the water flow control valve went out on my HM129. They sent me new parts free of charge, and a second Woodland Mills hat free of charge without my asking for either favor!
I really like Woodland Mills a lot! Not many companies do business like that anymore!
I would remind you, that since Covid19 happened, nothing is the same anymore. I had to travel 3 hours to buy Rear Tires for my Kubota M4050DT- I was considering purchasing front tires also. I found the supplier, a week before I made the three hour trip to Little Rock AR. By the time I got their he was apologizing to me for having sold out of front tires. He showed me his three open to the air tire storage buildings. He told me that he had a full years inventory at the beginning of the year, but how there must be a tire shortage, because he was already by the end of June 2021, well over half sold out of his inventory, and unable/unwilling to buy more. The reason is the Shipping Container rate cost for tractor tires was going to drive the shipping up to $400.00 per tire. (for a large rear tire)
Get you tires now if you need them!
This man was about the 6th tire supplier who told me this, or a similar story.