Choose a batch that makes sense to list individually
COMC handles individual items, so begin with cards you can identify and would actually want to sell as singles. Check several exact copies already listed on the site. Many low-priced copies can make processing an additional duplicate difficult to justify. That observation is not a guarantee that the cheapest current listing will sell, but it gives your batch selection a reality check.
Separate unfamiliar, altered, oversized, redemption and unusual holder items for eligibility review. The current consignment FAQ says new redemption submissions are unsupported and describes extra treatment for some other items. Do not assume a card is accepted merely because an old example remains visible in the marketplace. Retain any existing seals and ask for guidance when classification is uncertain.
Build the submission around groups and service levels
The Submission Wizard requires item groups within service levels. Raw trading cards and graded or uncirculated cards are separate groups, with additional categories for gaming, oversized items and comics. Complete the counts, approve the submission and print the slip for each group. One outer parcel may contain several clearly separated submissions.
Use a fictional example of 100 ordinary raw cards and three graded cards: make two physical groups and match each to its generated paperwork, rather than placing a single loose sheet over the entire box. The current guide lists service minimums and penalties for missing paperwork, but the wizard's current service choices should determine your actual quote. Choose those choices deliberately before packaging makes the groups hard to inspect.
- Raw groupCount, service level and matching slip.
- Graded groupSeparate count and matching slip.
- Outer parcelProtect both groups; retain the shipment record.
Schematic. Original packing-organization schematic, not a photograph of a completed COMC submission.
Reserve the processing money before mailing
Upfront processing and later selling or withdrawal charges answer different questions. COMC deducts processing fees from Store Credit as cards are processed, and the cards are not deposited until those charges are paid. Keep that funding requirement separate from a hoped-for future sale. A batch cannot finance itself before its inventory is available.
The illustrative worksheet below is intentionally based on your quoted amounts rather than fixed per-card rates. Include shipping to COMC and any applicable minimum, oversized or holder-related charges. If the projected net depends on every card selling quickly, reduce the batch or reassess the selection. Keeping some cards at home is a valid outcome of the calculation.
| Entry | What to record | Why it matters |
|---|---|---|
| Service quote | Group count × current rate; apply minimum | Upfront processing commitment |
| Other charges | Applicable item or holder charges | Avoid an incomplete estimate |
| Inbound shipment | Packing and actual carrier cost | Part of your total cost |
| Later sale costs | Current selling, storage and cash-out terms | Separate from intake processing |
Keep paperwork attached to the correct physical group
COMC recommends an inner-box and outer-box arrangement with padding to prevent movement. Keep cards protected and groups visibly separated without putting adhesive on a card. Label multiple inner boxes sequentially if they belong to one group. Photograph the packed groups and their paperwork before closing the outer box; those images help you reconstruct a count discrepancy.
Use the address and delivery instructions generated for the current submission. The wizard guide says facility walk-in drop-offs are not accepted, while selected card-show submissions use their own arrangements. Do not send a parcel to a pickup locker or an address copied from an old forum post. Keep the carrier acceptance record with the submission identifier and the list of groups inside.
Reconcile intake, processing and inventory
A carrier delivery scan tells you the parcel reached a destination. COMC's FAQ says the processing clock begins when the package is received and assigned to the account, with a batch due date provided in the notification. Record that date separately from the shipping date. If a submission seems missing, provide the submission ID, tracking and group counts in one support request.
As cards enter inventory, compare the identifications and quantities with your records. Check parallel names, condition notes and any unexpected processing category before pricing. Keep a small exception list instead of losing discrepancies inside the full batch. Once the first submission is complete, review the actual processing expense and time before scaling up. This is the point to refine selection, not automatically send everything that remains.
Frequently asked questions
Can different service levels travel in the same box?
COMC says yes when the groups are clearly separated, labeled and accompanied by the correct slips. The paperwork must explain which cards belong to each service.
Can I submit a complete set as one item?
The consignment FAQ describes singles rather than lots or sets. Do not assume a set will be offered intact; choose a different selling route if preserving the set is essential.
Does carrier delivery start the processing clock?
The FAQ ties the processing timeframe to receipt and assignment to your account. Save the account notification and batch due date instead of calculating solely from the carrier scan.
Should I send every common card in my collection?
No. Compare exact current listings and the full processing commitment first. A small deliberate batch can reveal costs and demand without committing the whole collection.
Sources
Product checklists, definitions, and policies can change. These sources were reviewed on 2026-09-30.
- COMC Submission Wizard guideReviewed September 30, 2026. Required item groups, matching slips and processing-fund requirements. The actual wizard provides current service choices and quote.
- COMC consignment FAQReviewed September 30, 2026. Updated September 8, 2026; singles eligibility, unsupported redemptions and account-assignment processing start.
- COMC inbound packing instructionsReviewed September 30, 2026. Inner-box and outer-box arrangement with padding; submission paperwork remains separate for each group.
Card Collector Capital publishes educational research, not financial advice. Card prices, populations, checklists, and grading policies can change. Verify the exact card and current information before buying, selling, or submitting a card.