I know the effects took place this month for sure. I have a nephew in a rehab facility in Calif, and I live in SC. On occasion, I use a PO shop to send him a "care" pkg, always weighing less than 2 lbs. On previous shops, I always paid a little over reimbursement, at $14.75, but since it was to my nephew, I figure it's worth it. Last week.........the cost for Priority shipping was $16.95!!! PHEW!! I still sent it bc I love my nephew, even though it ate into my profit.
On the other hand, I sent my son, who lives one state over in NC, a box this week, with the weight the same as I always send him, and the cost was 25 cents higher....right around $8.80, where it was $8.55 before. And I sent my sister in Mass. a pkg that was $11.85, which was a couple of bucks higher than last time, but at least still under reimbursement. So I reckon maybe it jumps up a lot higher for zones further out from the PO of origin??? I have no clue.