Deviking Product Feeds Pro provides separate tools for calculating numeric values and formatting how those values appear in the generated feed.

This distinction is important.

A Numeric Modifier changes the numeric value itself.

A Number Format transform changes how the resulting number is written.

Both can be used together.

Numeric Modifier

Numeric Modifier allows a numeric source to be adjusted before the value is formatted and written to the feed.

It is available directly in feed Mapping and can also be used conditionally through Dynamic Attributes.

Available operations include:

• Add fixed amount
• Subtract fixed amount
• Increase by percentage
• Decrease by percentage
• Multiply by
• Divide by

Example: Increase a Price by 10%

Suppose the source price is:

100

Configure:

Numeric Modifier:
Increase by %

Value:
10

The resulting numeric value becomes:

110

Example: Decrease a Price by 15%

Starting value:

100

Configuration:

Numeric Modifier:
Decrease by %

Value:
15

Result:

85

Example: Add a Fixed Amount

Configuration:

Source:
Current Price

Numeric Modifier:
Add fixed amount

Value:
5

A price of:

49.90

becomes:

54.90

Example: Subtract a Fixed Amount

Configuration:

Source:
Current Price

Numeric Modifier:
Subtract fixed amount

Value:
5

A price of:

49.90

becomes:

44.90

Multiplication

You can multiply the source value by a specified number.

Example:

Source:
Current Price

Numeric Modifier:
Multiply by

Value:
1.20

A value of:

100

becomes:

120

Division

You can also divide the source value.

Example:

Source:
Current Price

Numeric Modifier:
Divide by

Value:
1.24

A value of:

124

becomes:

100

Numeric Modifier Processing Order

The Mapping processing sequence is:

Source
→ Fallback Source
→ Numeric Modifier
→ Transform
→ Prefix / Suffix
→ Feed Output

This order is important.

For example:

Source:
Current Price

Numeric Modifier:
Increase by 10%

Transform:
Number Format

Decimals:
2

If the original price is:

19.9

the Numeric Modifier first calculates:

21.89

and Number Format then controls how that result is written.

Fallback Source and Numeric Modifier

If the main Source is empty and a Fallback Source is configured, the fallback value is resolved first.

Numeric Modifier is then applied to the resolved value.

For example:

Source:
Sale Price

Fallback Source:
Regular Price

Numeric Modifier:
Decrease by 5%

If Sale Price is empty, Regular Price becomes the input for the calculation.

Number Format

The Number Format transform controls the display format of numeric values.

Available settings include:

• 0–8 decimal places
• Decimal separator: dot or comma
• Thousands separator:
  • None
  • Dot
  • Comma
  • Space
• Remove trailing zeros
• Live preview

Example: Two Decimal Places

Original value:

129.5

With:

Decimals:
2

the output becomes:

129.50

Example: European Number Format

Configure:

Decimals:
2

Decimal separator:
Comma

Thousands separator:
Dot

A value of:

1234.5

can be output as:

1.234,50

Example: Space Thousands Separator

Configure:

Decimals:
2

Decimal separator:
Dot

Thousands separator:
Space

Result:

1 234.50

Removing Trailing Zeros

When Remove trailing zeros is enabled, unnecessary decimal zeros are removed.

For example:

19.00

can become:

19

while:

19.50

can remain:

19.5

depending on the configured format.

Price Sources

Deviking Product Feeds Pro includes standard WooCommerce price sources:

• Regular Price
• Sale Price
• Current Price
• Currency

It also provides tax-aware WooCommerce price sources.

Prices Including Tax

• Regular Price incl. tax
• Sale Price incl. tax
• Current Price incl. tax

Prices Excluding Tax

• Regular Price excl. tax
• Sale Price excl. tax
• Current Price excl. tax

These tax-aware values use WooCommerce tax calculations.

You do not need to manually add or remove a fixed VAT percentage when the required WooCommerce tax-aware source is available.

Tax-Aware Price Example

Suppose a marketplace requires a tax-inclusive current price.

Choose:

Source:
Current Price incl. tax

You can then apply Number Format:

Decimals:
2
Decimal separator:
Dot
Thousands separator:
None

The WooCommerce-calculated tax-inclusive amount is formatted according to the feed requirements.

Adjusting a Tax-Aware Price

Numeric Modifier can also be applied to tax-aware sources.

Example:

Source:
Current Price incl. tax

Numeric Modifier:
Decrease by %

Value:
10

Transform:
Number Format

Decimals:
2

The system first retrieves the WooCommerce tax-inclusive price, applies the 10% reduction, and then formats the result.

Adding Currency to the Output

Currency can be added using Prefix or Suffix when required by the destination feed.

For example:

Suffix:
 {{source:currency}}

Depending on the currency source, the final result could become:

89.90 EUR

Use this only when the destination feed expects the currency inside the same field.

Some marketplaces require price and currency in separate fields.

Numeric Modifier vs Number Format

These two features serve different purposes.

Numeric Modifier

Changes the actual value.

Example:

100
→ decrease by 10%
→ 90

Number Format

Changes how that value is displayed.

Example:

90
→ 2 decimals
→ 90.00

Together:

100
→ decrease by 10%
→ 90
→ format to 2 decimals
→ 90.00

Global vs Conditional Numeric Adjustments

Use the Numeric Modifier directly in Mapping when the same calculation should apply to every product.

Example:

Every product:
Current Price + 5%

Use a Dynamic Attribute when the calculation should depend on product conditions.

Example:

Shoes → -10%
Accessories → -5%
Everything else → unchanged

One Transform per Mapping Row

Each mapping row uses one Transform.

For example, a row can use:

Number Format

as its Transform.

Numeric Modifier is separate from Transform, so you can use both together.

For example:

Current Price
→ Decrease by 10%
→ Number Format
→ 2 decimal places

This allows calculation and output formatting to remain independent.

Example: Complete Marketplace Price Configuration

Suppose a marketplace requires:

• WooCommerce current price including tax
• 8% markup
• two decimal places
• dot decimal separator
• currency appended to the value

Configure:

Source:
Current Price incl. tax

Numeric Modifier:
Increase by %

Value:
8

Transform:
Number Format

Decimals:
2

Decimal separator:
Dot

Thousands separator:
None

Suffix:
 {{source:currency}}

The processing sequence is:

WooCommerce tax-aware price
→ 8% increase
→ numeric formatting
→ currency suffix
→ final feed value

Best Practices

Use WooCommerce tax-aware price sources instead of manually calculating VAT whenever possible.

Use Numeric Modifier only for actual numeric changes.

Use Number Format only for presentation and destination-feed formatting.

Use Dynamic Attributes when the numeric change depends on product conditions.

Keep price calculations separate from product data whenever possible so your WooCommerce catalog remains unchanged.

Always check the requirements of the destination platform before deciding whether the feed should contain:

• price including tax,
• price excluding tax,
• currency in the same field,
• currency in a separate field,
• decimal dots,
• decimal commas,
• or a specific number of decimal places.