When adding items such as PTFE tubing, Glue, Applicator Tips the shipping cost on this website calculates high as it determine what an individual shipment costs and at times can even be multiples.
When your adding these items to kits in most cases there is no additional shipping cost. If you order individually and its under 16 oz they can also be shipped USPS First Class at a very reasonable rate.
Please rest assured that I will correct the shipping and you will be charged the correct amount.
If there is a concern please email me.
Items such as the Sig CA and Applicator Tips are very nice products so please do not be discouraged by what the website calculates for shipping if you would like these items.
Corky