Frequently Asked Questions


Shipping Policy Update

The shipping costs are no longer built in to our prices — instead we have reduced the price of many items and now have various shipping options. You can choose lower-cost flat-rate shipping (typically USPS Ground Advantage, delivery time 2-5 business days within the USA), or Expedited shipping (more expensive and we hope faster delivery, probably FedEx).

For international orders the same flat-rate and expedited options are available, and the charge is more, reflecting our costs.


What would it cost when ordering from Europe, with regard to shipment cost and carrier/courier?

On June 20, 2025 I sent a couple of filters to the Netherlands, and was told that when it arrived there was a 21% VAT, plus an 8-euro handling charge.

But with the current political / tariff confusion I can’t guarantee anything!

I have been covering the shipping costs — this is included in the price.  I definitely don’t make much profit when sending these things out of the USA, which is why I encourage people to order two or three at a time, as it costs me about the same as long as everything fits in my padded envelope.  But I will happily send just one!


August 21, 2025 Update: A recent TIS shipment into Canada had a new 25% tariff applied plus the customary 13% “HST” (Harmonized Sales Tax) and a $10 handling fee, all paid by the recipient.

And my own expenses still reflect the tariff on circuit boards and components coming from China. I have had to raise my prices on new builds, but I have also reduced my margins so the increase isn’t as dramatic.