My grandchildren (and others!) love this item. The delivery-free offer attracted me, so I ordered 3 of them, and they were sent to me here in the Shetland Isles from Hong Kong in exactly a week, the sets of balls sealed in flat rectangles in polythene, all in one padded bag on top of each other.
I had previously ordered 2 from a supplier in the uk - £6.74 postage for 2 - which arrived in a few days, on different days, having been packed individually, but in the same flat form. Both came via Royal Mail which charges the same for these Islands as the rest of the uk. Some carriers are more expensive.
However, I can't comment on the quality at present, as both products look the same. Children and adults all love playing with them.