I ordered two bags of these in June 2017. I use them exclusively for car cleaning. I was very happy with the cloths that I received in 2017 - they were the perfect weight and softness for removing wax, but cheap enough that I could use them for dirtier jobs like sill and interior cleaning. The cloths seemed like a good balance of cost and value.
I recently re-ordered two bags in September 2018 and I am disappointed with them. They are way thinner, have less 'weight' to them, and don't feel as soft. I don't know if the manufacturer changed them in the year between my purchases or if the second set was a knock off, but the quality is definitely lower. They still seem like a decent cloth, but I think I can get an equivalent cloth at a cheaper price.
I'm thinking I will go to Costco and buy them direct and compare the quality to this new batch.