Prices start at is the correct option.
If you want to say that the price of a service or product starts at a certain price, let’s say $20.00, this means that the service or product can cost $20.00 or more but not less than $20.00.
If you wanted to use from, you could say the price is starting from $20.00. This would have the same meaning as
above.
Here are some more examples:
- The price of the house starts at $3 million.
- The price of the house is starting at $3 million.
- The opening bid at the auction starts at $50.00.
- The opening bid at the auction is starting at $50.00
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