Hello, thank you for your interesting in. I can explain your confusion.
1, About the price: we have 10% off coupon, and after shipping, you will get 5% points back to your account, you can use this points in your second order. Also the us warehouse: $50 free shipping, $30 half shipping.
So take your mesh pro as example, the price you can get is :21.960.9=$19.76, after shipping you get 5% points, is 19.760.05=$1, so it can see as the final price is 19.76-1=18.76. And use $1 for your next order.
2 About the warehouse:
The product shows all the warehouse it has, the same item shows in stock in us warehouse, may there has one color or others colors there, so you can see there is 5 units in us warehouse, and 80 in sz warehouse.
Hope this can help you:blush: