We will happily replace defective cubes at no cost to you, including the shipping charge. We will ask you to pay the shipping upfront, and if the cube is indeed defective, we will refund you the shipping. Please return it in its original condition, with the box.
If the cube is not defective, but pieces have popped out (which happens to the best of speedcubers, see former record holder Mats Valk recover from a popped piece and still get under 10 seconds), there are many you tube videos that guide you through reassembling it on youtube.
If you've just changed your mind about your purchase, and the cube is still in mint condition in it's original packaging, you can return it and we will issue you with a voucher to the value of the cube.
Please email us at firstname.lastname@example.org with any questions. (Please include a few pics of the defective cube if relevant)