Each country of origin of manufacturing has different Tariff rate. For example. U.K origin will pay 10%. Please find out this rate yourself. Shipping to non-U.S. is tariff free. You do not pay anything. 
Most of my tubes were U.S. made. So, you are free of tariff if shipping to U.S. Thanks for the attention.
Due to the new 35% U.S. Tariff on all items shipped to the USA, Buyer will pay for this new burden. My prices have been lowered to the minimum, and cannot be jeopardized by this new tariff, hope buyers will understand, thank you.

One pair of 12AT7 tubes by Raytheon, Rogers, GE and Sylvania. Buyer can pick any one pair of the above brands, provided they are still available.

Test Ratings:  85/85 to 90/90 on my Jackson 648s tester, minimum is 70, AT tubes have  a wide swings in rating, new tubes at 85 to 100 is quite usual,

SHIPPING: Shipping fees quoted are for USA and Canada only. Most other overseas countries pay $25 for airmail with tracking. I will collect $6 more from your PayPal account after bid. If no tracking, I am not responsible for missing parcel.

Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.