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Track Your LEGO Collection

CardWorth
LEGO Collection Value

Track the estimated value of your LEGO sets from BrickLink sold data, see an estimated retirement status, and compare against what you paid. Estimates are refreshed on a schedule, not in real time.

What CardWorth Does for LEGO Collectors

Collection Value

Track the estimated value of your LEGO sets with the source and last-updated time shown. Sets without a current value are listed as unpriced.

Estimated Retirement Status

See estimated retirement status for your sets. Estimates are model-based, not confirmed dates.

Portfolio History

See how the estimated value of your collection changes over time from the snapshots CardWorth records.

Sealed vs. Used

Record sealed, used, and incomplete sets separately and keep several copies of a set in different conditions.

Gain and Loss

Compare your recorded costs with current estimates, set by set. Sets without a recorded cost are not counted as profit.

How It Works

1

Track Your Sets

Search by set number and record condition and quantity. LEGO box photo scans have a free daily allowance.

2

Monitor Retirements

See estimated retirement status for your sets. It is a model estimate, and price changes after retirement vary by set.

3

Compare With What You Paid

Enter a purchase price to compare it with the current estimate. Prices can fall as well as rise; CardWorth does not give investment advice.

Frequently Asked Questions

What is CardWorth and how does it work?

CardWorth tracks the estimated value of your LEGO collection. Add your sets, and CardWorth shows an estimate from BrickLink sold data for each set that has one, an estimated retirement status, and, if you record a purchase price, the difference from the current estimate.

How accurate are CardWorth's LEGO set prices?

They are estimates, not actual sale prices. Prices are refreshed on a schedule, typically every few days, not in real time. Not every set has a current market value; sets without one show as unavailable. Each value shows when it was last updated.

Can CardWorth predict when a LEGO set will retire?

No. CardWorth shows an estimated retirement status, which is a model estimate based on set age. It is not a confirmed date from LEGO and is not a forecast of future prices.

What makes a LEGO set a good investment?

Whether a set holds or gains value depends on the set, its condition and completeness, and demand, and prices can fall as well as rise. CardWorth shows current estimates and your recorded cost so you can judge for yourself. It does not give investment advice.

Is CardWorth free to use?

Free accounts cost nothing and can track up to 50 Pokémon cards plus LEGO sets. Pro is $4.99/month or $49/year, with a $149 one-time Lifetime option.

Can I track both sealed and opened LEGO sets?

Yes. You can record a set as New/Sealed, Used/Complete, or Incomplete, and keep multiple copies in different conditions. Where BrickLink data separates new from used, the estimate follows your choice; an incomplete set is not valued separately.

Does CardWorth have LEGO price alerts?

Not yet. Price alerts for Pokémon cards by in-app notification and email, checked about hourly against the latest price update. Free accounts can keep 5 active alerts; Pro is unlimited.

Ready to Track Your LEGO Collection?

Track the estimated value of your LEGO sets in one place

Free plan • No credit card required

Prices are estimates derived from pokemontcg.io (TCGplayer market data) and BrickLink sold data. Prices are refreshed on a schedule, typically every few days, not in real time. Not a professional appraisal. About our data