This is exactly a sawmill, not a resale. I got to them on the recommendation of the builders. There are a lot of boards available. They are sawing fresh forest (I have not seen dead wood). All the necessary sizes were available. I didn't notice any blue, black, rotten ones in the grade 1-2 shown. They have them separately, like 3-4 grades. It was delivered on the same day. The prices are reasonable. There are no complaints about the quality. For me, the main thing is not to cheat.