# Bying data, selling data and currencies

**URL:** <https://www.dolibarr.org/forum/t/bying-data-selling-data-and-currencies/18408>\
**Category:** PM modules\
**Created:** [January 17, 2020, 11:44pm UTC](https://www.dolibarr.org/forum/t/bying-data-selling-data-and-currencies/18408 "2020-01-17T23:44:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wed](https://www.dolibarr.org/forum/letter_avatar_proxy/v4/letter/w/53a042/32.png) [@wed](https://www.dolibarr.org/forum/u/wed)\
**Post date:** [January 17, 2020, 11:44pm UTC](https://www.dolibarr.org/forum/t/bying-data-selling-data-and-currencies/18408/1 "2020-01-17T23:44:06Z")

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For each product I am looking for a way to specify my suppliers price, product number and identifier.

To the same product I would like to specify my selling price or coefficient, as well as my product number.

For some products, I have alternative sources with their respective buying price.

How are these operations applied for the products?