Package/parcel/freight forwarding from a No sales tax location

I've been suggested by many users to join Shipito and use their package/parcel/freight forwarding service. The only reason I hesitate is because their main warehouses locations are in Torrance, CA, which means I have to pay the sales tax (which is 9.5% in California). It makes no sense to pay such a high sales tax.

I know that Shipito has a warehouse in Oregon as well, but I can't use it from Russia, because
- they can send packages from there using FedEx only,
- they don't offer package consolidation in Oregon.
Of course I can send my packages from the Oregon warehouse to Torrance, but it will take additional time. And it seems to make sense for items which are not cheap.

Do you know whether any leading freight forwarders using USPS, having package consolidation, which allows not to pay any sales tax at all?