How much is it to get a card graded has no published answer, because the fee depends on the service level you choose and the value you declare, and the postage depends on where you are and how many cards you send. What can be worked out precisely is what your submission costs you, and the four numbers that decide it are all in front of you before you post anything.
Number one: the per-card fee
This is the figure on your grader's service-level page for the tier your declared value falls into. It is the part of the cost that is genuinely published, and it is also the part that changes most often, which is why this site asks for it rather than printing a table that would be wrong within months.
Number two: the extras
Anything you tick beyond the base service is charged on top and usually per card: oversized cards, authentication of an autograph, a reholder for a card already in a slab, an expedited turnaround. Add them up per card, because that is the unit the bill uses and the unit the decision uses.
Numbers three and four: the two journeys
You pay to send the package, insured for what is in it, and the grader charges you to send it back, also insured. Both are per submission rather than per card, so they are the reason a small submission is expensive per card and a larger one is not. Get real figures for both rather than estimates; they are easy to look up and they move the answer a lot.
What the answer is for
The output to carry forward is the cost per card, because that is the hurdle each card has to clear: it must be worth that much more graded than raw before the submission has broken even. The uplift calculator on this site takes it and compares it against the raw and graded prices you read from completed sales.
Questions people ask about how much is it to get a card graded
Is there a cheapest way to grade a card?
Sharing the postage across more cards is the only reliable one. The fee itself is set by the grader's tier structure and declared value, and there is no route around it that does not involve declaring a value you do not believe.
Why is insured return postage charged on top?
Because the grader is shipping a package containing everything you sent, and the insured value is the whole submission. It is a genuine cost rather than a surcharge, which is why it scales with what you declared.
Does the grade affect the price I pay?
No. You pay for the examination, and the result of the examination does not change the bill. That is the arithmetic reason to cost a submission against the grade you expect rather than the one you want.
Should I grade a card I am not selling?
That is a preference rather than an arithmetic question. The calculator will tell you what it costs; whether a slab is worth that to you for a card staying in your own collection is not something a number answers.