Auto-convert USD price to all currencies with one click

[stilla]

from this ticket

Problem

Setting multi-currency pricing currently requires merchants to manually calculate and enter each currency price individually. This is tedious, especially when you just want standard exchange-rate equivalents across all supported currencies.

Proposed Solution

Add a "Use all currencies" option when setting product pricing:

1. Merchant sets a base price in USD (e.g. $360)
2. Clicking "Use all currencies" auto-populates all other supported currencies using live or standard exchange rates
3. At checkout, Polar auto-detects the buyer's location and presents the appropriate currency price

[stephomi]

Agreed!

Very tedious, especially with tiered pricing or multiple products.
Ideally it would snap to typical consumer prices (e.g. 19.99 → 21.99), at least when the difference from the converted price is small.
Having an “Add all currencies” option (or at least a better multi-select/filter) would help.

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Also, polar.sh doesn’t support per-country customization (unlike platforms like Google Play or Apple, where it’s harder for users to game localization).
Since it’s purely currency-based, automatic conversion makes even more sense.