We offer universal-fit demo versions of our IEMs upon receiving a refundable deposit (half the retail price) via PayPal. Shipping is free in the European Union, elsewhere the non-refundable fee is 35 EUR. Once you receive the IEMs, you can test them for one week and then need to send them back at your own cost. Please mind that the quantity of demo units is limited, but you will be notified via email when a given unit is available for you. Demo units are not new, they are our own demos that constantly travel around the world, got no warranty and are provided only with a basic, non-full set of accessories.