Price Variables Reference

This is a complete list of every price variable available in the repricing rule builder. You can use these in conditions (to filter which items a rule applies to) and as the price source in the Set Price action.

All price variables are numeric. Some represent external market prices, others represent data from your own store.

Your Listings

These variables come from your ManaPool store data.

TCGPlayer

TCGPlayer is one of the largest trading card marketplaces. These variables reflect real-time pricing data from TCGPlayer listings.

Which TCGPlayer Variable Should I Use?

• TCGPlayer Low (NM) is the most popular choice. It lets you compete directly with the cheapest seller.
• TCGPlayer Market (NM) is more stable. It smooths out temporary price dips from fire sales or listing errors. Good for stores that don't want to chase every price drop.
• TCGPlayer Low w/ Shipping (NM) is the most accurate comparison for total buyer cost, but it's higher than the plain Low price because it includes shipping.
• TCGPlayer Direct Low is relevant if your buyers compare you mostly against Direct sellers.

Card Kingdom

Card Kingdom is a major single-seller retailer. Their prices are curated and tend to be more stable than marketplace prices.

Card Kingdom Tips

• CK Buylist makes an excellent natural floor. A rule like LIMIT MIN set to the CK Buylist price ensures you never sell a card for less than what CK would pay you for it.
• CK Retail tends to track higher than TCGPlayer Low. It's a good reference for premium pricing or as a secondary data point.

ManaPool

ManaPool is HippoLink's own marketplace. These variables reflect prices from other sellers on the platform.

CardTrader

CardTrader is a European-focused trading card marketplace with a global seller base.

Null Values

Any price variable can be null — meaning the data isn't available. This happens when:

• A card doesn't exist on a particular marketplace.
• The marketplace hasn't provided pricing data yet.
• The card has no listings in the specified condition.

If a price variable is null and your rule uses it as a price source, the rule's price action can't execute. That's why null checks in conditions and FIRST_DEFINED fallback chains in price actions are so important.

Handling Nulls

In conditions: Use an is not null condition to ensure data exists before using it.

IF TCGPLAYER_LOW_NM IS_NOT_NULL AND CONDITION IS 'NM'
THEN SET PRICE TCGPLAYER_LOW_NM

In price actions: Use FIRST_DEFINED to try multiple sources.

SET PRICE FIRST_DEFINED(TCGPLAYER_LOW_NM, CARDKINGDOM_RETAIL_NM, MANAPOOL_LOW_NM, 0.99)

This tries each variable in order and uses the first one that has a value. The final number (0.99) is a hardcoded fallback that's never null. See Building Conditions for more on null checks.

Using Variables in Conditions vs. Actions

What's Next

• Date Variables Reference — date-based variables for time-sensitive rules.
• Real-World Examples — complete rules using these variables.