You have to factor in tax and size of items.
- You pay more tax to ship to Arizona, but the receiving fees are cheaper and the turnaround is faster.
- You pay no tax to ship to Oregon, but the receiving and forwarding fees are higher and the turnaround is longer.
- If you buy off marketplace/fb in states, just send to Arizona.
Places that charge tax, usually under 50USD is best to send to Arizona. Anything over 50 is best to go to Oregon.
I check the postage to Oregon + Receiving Fees. Lots of time, its cheaper to send to Oregon so I post there but you have to factor in size.
If you want to send huge items to Oregon, you need to let them know first.