# Inventory Purchase alternative quantity

**URL:** <https://forum.sambapos.com/t/inventory-purchase-alternative-quantity/11991>\
**Category:** V5 Question\
**Created:** [August 8, 2016, 8:50am UTC](https://forum.sambapos.com/t/inventory-purchase-alternative-quantity/11991 "2016-08-08T08:50:16Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![QMcKay](https://forum.sambapos.com/user_avatar/forum.sambapos.com/qmckay/32/27925_2.png) [@QMcKay](https://forum.sambapos.com/u/QMcKay)\
**Post date:** [June 23, 2017, 6:49pm UTC](https://forum.sambapos.com/t/inventory-purchase-alternative-quantity/11991/21 "2017-06-23T18:49:49Z")

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> [@stephencoduor](#):
>
> even when I delete the item and reenter the original cost come back

The Default Cost parameter is not going to change your Purchase Cost. It is there for **_convenience only_** when making an Inventory Purchase.

The Cost of your Purchases is based on making purchases. The reported Cost, which is an **average** , could change over time if the Purchase Cost for the item fluctuates. But again, this has nothing to do with Default Cost. It is calculated via Purchase Transactions only.

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> [@stephencoduor](#):
>
> Which is the best way to set inventory items? Should I use I use transaction unit or additional uni

That is simply a matter of Preference. Personally, I **never** use the Transaction Unit; I use Additional Unit(s).

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**Author:** ![stephencoduor](https://forum.sambapos.com/user_avatar/forum.sambapos.com/stephencoduor/32/33036_2.png) [@stephencoduor](https://forum.sambapos.com/u/stephencoduor)\
**Post date:** [June 25, 2017, 7:14pm UTC](https://forum.sambapos.com/t/inventory-purchase-alternative-quantity/11991/22 "2017-06-25T19:14:18Z")

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Great man, thanks I am now getting some good results.

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