CX CDX Auction Docs
Feature overview

What’s live on CDX Auction

One place that lists current product capabilities in everyday language. Marketing pitch: Why CDX. Word definitions: glossary.

1. Core marketplace

Timed auctions

Lots have a start and end time. Proxy max bids. Activity near the end can extend the clock (anti-snipe).

Buy Now & fixed price

Optional Buy Now on auctions. Fixed-price catalog lots with no bidding. Live metal Buy Now recalculates with spot on bullion.

Make offer

Private best offer when the seller allows it. Accept, counter, or decline. Not a public bid.

No buyer premium

CDX does not add a percentage on top of the sold price for buyers (unlike many major houses).

Ending soon

Dedicated view of lots closing soon, with heat / urgency sorting. /ending.php

Live floor view

Full-screen focus on the next ending lot — useful for a shop TV. Timed auctions, not a live-show fee product. /theater.php

Lots with video

Product video on the lot page and Prime lane. /prime.php

Dealer stores

Public storefronts with about, policies, feedback, live / fixed / sold. /sellers.php

2. Value tools

Guides detail →

Metal value

Live spot × weight × purity on bullion cards. Also called “melt” in the industry — we label it metal value.

Great deals

Lots scored great / fair / rich vs metal, wholesale guides, and retail averages. Filter: ?filter=deals

Below metal value

Browse lots asking less than raw metal. Filter

Guide / Greysheet chips

Stored dollars from the seller’s inventory when GSID-linked. Not a live API call on every page view.

Live metal markets board

Gold, silver, platinum, palladium prices on the home page power spot-linked Buy Now.

Modern mint & sealed

Current-year and sealed product rail — metal tools without Amazon-style referral tax. /fresh-outs.php

3. Collector tools

Full guide →

Set checklist

Year/mint maps; mark owned; see missing dates. /sets.php

Missing dates & chase list

Focus on dates you still need; chase live fills. Missing dates · Chase

Saved searches

Coin-smart alerts: series, great deals, below metal value. Account → Searches.

Portfolio

Wins and open high bids; metal P&L when bullion-linked.

Messages

Buyer ↔ seller private mail about lots. /messages.php

Discover

Serendipity lanes into deals, ending soon, and more. /discover.php

4. Seller tools

How to list →

$0 SpotPro sell (always)

SpotPro dealers: $0 list / $0 sell platform fees — always. Public (non-SpotPro) rates are separate.

Sell form on CDX

Photos, metal tools, rich description, generate description, fee comparison. /sell.php

Inventory hold

After a serious bid, SpotPro stock can be held so the counter doesn’t double-sell.

Feature lots free

Homepage featured rail without a promoted-listings % of sale.

Second-chance offers

Offer to underbidders on unsold lots at $0 platform sell (SpotPro).

Move from eBay

CSV import, bulk metal reprice, end-list checklist, dual-list flags, fees-avoided meter. Guide · Bulk tools

Store about & policies

Rich text on Account → My store (and SpotPro seller console). Shown on the public store page.

Fee comparison

Live calculator vs eBay / Whatnot / Amazon models. /vs.php

5. Ops, pay & trust

Buyer pays dealer

Card, PayPal, Zelle, wire from Company Profile. See payments.

Shipping & pickup

Tracking, optional Shippo labels, local pickup QR within seller radius. After sale.

Trust checks

Email verify, progressive friction, optional seller phone/ID. Trust.