Three quotes for the same shipment can look like a price comparison.
EXW, FOB and DDP are really three different hand-off structures.
Before comparing numbers, ask three questions.
Who can legally complete export clearance?
Who controls the main transport?
And who can act as importer in the destination country and pay the duties?
If the hand-off is vague, a cheap quote can simply hide the cost until later.
EXW creates the earliest hand-off.
The seller normally makes the goods available at the factory or named place.
The buyer takes on collection, loading in many cases, export and import work.
If the buyer cannot handle export formalities in China, compare FCA instead of assuming EXW is simpler.
FOB is for sea or inland waterway transport.
The seller clears export and delivers the goods on board at the named port.
Risk transfers when the goods are on board; the buyer controls the main freight and import.
For containers handed to a terminal before loading, FCA may match the real hand-off better.
DDP pushes the seller's responsibility furthest, including import clearance and duties.
But DDP does not automatically include cargo insurance, and it does not magically make a foreign seller a lawful importer.
With a very low DDP quote, verify the importer of record, tax evidence, exception charges and return responsibility.
For a usable comparison, name the exact place and split loading, export, freight, insurance, import clearance, duties and product compliance line by line.
Incoterms allocate delivery, cost and risk.
They do not settle ownership, payment, customs value or product certification by themselves.
So do not begin with the cheapest term.
Start with legal ability, choose the hand-off and control you need, then compare the full landed cost.
That is how a quote becomes executable.