The offset is on the inside of the wheel. If by some reason it has been scarred off (which is highly unlikely) you could find the offset with a piece of cardboard and a measuring tape. Also, Nothing xxr makes costs $1000. You could buy those rims brand new and wrap them in brand new rubber for far less than $1000. Your tires cost $73.21 a piece $292.84 set new. Rims cost $118.65 a piece new $474.60 set new. That's a total price of $744.44. Even if you included shipping and mounting and balancing into your price.... it wouldnt total $1000....
if you dont want to get flamed on a price, quit expecting to sell something for more than you paid for it. Everyone on this website has the internet, everyone knows what XXRs are and where they sell them. We all have access to the same product and prices that anyone else does...... this aint a used car lot, we know how much you paid for those rims. You're too lazy to take a wheel off and check the offset, but you want 150% of retail value.