What factors are causing such high shipping fees?

Context:

I paid roughly $60 for a shipment weighing 3.6kg last time. However, my current shipment, which totals about 8.8kg, is priced at $170 even with expert handling. I was anticipating a charge in the $100–140 range. Is it that ACBuy is imposing unusually high fees, or are other agents facing similar issues?

Hey there, I’m also scratching my head at these spikes in shipping fees lately. I feel like it’s not just about the weight but maybe some extra factors are coming into play, like different handling criteria or even new surcharges that haven’t been clearly spelled out. I’m wondering if it’s partly due to the way costs are segmented or if there’s some fresh policy updates that we’re not aware of yet. Has anyone else noticed changes with their shipments recently? It would be really interesting to see if anyone has dug into whether it’s related to the shipping route or maybe even additional logistics measures. What’s everyone’s take on this?