40 oz Marble color Stanley Tumbler

I have a sale that ends tomorrow night. 6/4/26 at 11:59pm all cups you see listed on OfferUp are half price. If you see a cup for $50 that means it’s $25 if you see a cup for 40 that means it’s $20 if you see a cup for $30 that means it’s $15. I’m selling a Marble color 40 ounce Stanley cup brand new open box. The reason why the box is open is to check and make sure everything is complete and if there’s nothing wrong with the cup itself, I check all cups to make sure everything is correct some cups come from the factory without a straw. I wouldn’t know that if I don’t open up the box sometime the top might be cracked. I don’t know that if I don’t open up the box. So this is why I open the box. But it’s brand new never been used.