Pregrading is done once your cards are received here by us at GradedGem.
We do not charge for pre-grading and we do not believe grading services should, as a submitter you are paying PSA for their professional opinion.
If you do not want a card graded due to pre-grade, please just notify us of this, you can then choose to either have it sent back with your returns or pay the return postage fee for an immediate return.
Please see PSA Grading standards here – PSA Card
We can also recommend this article at – PSACollector