What is the real landed cost when importing a 3D printing machine from China to the US? (including duties, freight, customs, etc.)

I’m based in the US and planning to import a 3D printing machine from China for our setup. I’ve checked a few supplier quotes and even tried estimating costs using online duty calculators, but the numbers are all over the place.

Some quotes include freight, some don’t, and I’m not fully clear on customs duties, port charges, clearance fees, or any hidden costs that might come up once it actually arrives.

If anyone in the US has already gone through this, it would really help to understand the actual landed cost you ended up paying vs what you initially expected.

Would appreciate a rough breakdown or even ballpark percentages for freight, duties, customs, etc.