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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
at an extra fee
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "at an extra fee" is correct and usable in written English. You can use it when referring to an additional charge for a service or item. Example: "The hotel offers room service at an extra fee." Alternative expressions include "for an additional charge" and "for a supplementary fee."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
for an additional charge
for an extra fee
for an additional fee
at a premium
at an extra cost
for an added fee
subject to an extra fee
for an extra payment
at an increased price
for an additional sum
for an additional run
for an additional benefit
for an additional price
for an additional screen
for an additional amount
for an additional person
for an additional day
for an additional year
at a higher rate
subject to an additional fee
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
3 human-written examples
Seat reservations are required for travel in high-speed trains at an extra fee of $11. Rail travel days may be nonconsecutive, and additional days cost $21 to $32, depending on class of travel and type of pass.
News & Media
Do not click on some shadow site promising to do it for you at an extra fee.
News & Media
Microscopic examination of blood for malaria was routinely available at the hospital at an extra fee.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
Adding an extra fee at the pump simply makes the cost explicit.
News & Media
He listened to the story of my own illegal crossing, and said, "You're probably going to have to pay an extra fee at the airport".
News & Media
The Home Office has outlined plans to allow holidaymakers and business travellers to skip queues at UK passport control by paying an extra fee.
News & Media
Extra features, including full session tracking, user stories support and email support, are available for an extra fee, starting at $10 per month.
News & Media
Use a Government Rental Many car rental companies allow Federal Government (military and civilian) Personnel to rent at a lower age and without an extra fee.
Wiki
But "formal peer review" will be optional, at the author's request—and for an extra fee.
Science & Research
You might have to pay an extra fee to stay at the hostels if you're not an HI member.
Wiki
Among the nonurgent patients refusing reorientation (31.8%), almost 41% would be willing to pay an extra fee for being treated at the ED.
Science
Expert writing Tips
Best practice
When discussing pricing, clearly state what the base cost includes and specify what requires paying "at an extra fee". This prevents confusion and builds trust with customers.
Common error
Avoid vague statements like "services available at an extra fee". Always specify the exact amount or how the extra fee is calculated. For example, "Priority boarding is available "at an extra fee" of $20".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at an extra fee" functions as a prepositional phrase, modifying a noun or verb by indicating the condition under which an additional cost is incurred. Ludwig confirms its grammatical correctness and usability.
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Academia
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "at an extra fee" is a grammatically sound prepositional phrase used to indicate that a service or item comes with an additional cost. While Ludwig confirms its correctness, it's relatively rare in occurrence. The phrase appears most frequently in news and media, scientific publications, and wiki articles. When using "at an extra fee", ensure that specifics about the cost are clearly stated to avoid ambiguity. Common alternatives include "for an additional fee" or "subject to an extra charge". Understanding the context and clarity of communication contributes to correct usage.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
for an additional fee
Replaces the preposition "at" with "for" and uses the adjective "additional" instead of "extra".
subject to an extra charge
Uses "charge" instead of "fee" and "subject to" to indicate conditionality.
with an additional surcharge
Substitutes "fee" with "surcharge" to imply an added tax or cost.
requiring a supplementary payment
Replaces "fee" with "payment" and uses "supplementary" to mean additional.
with an upcharge
Uses the term "upcharge" as a synonym for an extra fee.
at a premium
A more concise way to indicate an extra cost for a specific benefit.
for an escalated price
Suggests that the price has been raised or increased.
for a higher price
Simplifies the phrase to indicate a more expensive option.
incurring additional expenses
Focuses on the action of incurring costs rather than the specific fee.
costing more
A brief and direct way to state that something is more expensive.
FAQs
What does "at an extra fee" mean?
The phrase "at an extra fee" means that an additional charge applies for a particular service or item, beyond the base price.
How can I use "at an extra fee" in a sentence?
You can use it to indicate that something is available but requires an additional payment, such as, "Seat reservations are required for travel in high-speed trains "at an extra fee".
What's a similar phrase to "at an extra fee"?
Alternatives include "for an additional charge", "subject to an extra charge", or "requiring a supplementary payment".
Is it better to say "at an extra fee" or "for an extra fee"?
Both "at an extra fee" and "for an extra fee" are grammatically correct and can be used interchangeably, although "for an extra fee" is slightly more common.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested