Hello. Consider the possibility of a massive price change in ads.

You mean by admin or by user?

By the user of course) When prices change, it is very difficult for the user to change the cost of each product, especially when there are a lot of ads. Add the possibility of a massive increase or decrease, for example by 10 or 20%, and so on. I think the meaning is clear to you.

@atba
We are talking about 1 user from milion that would need that, for me it does not make sense to create such feature as plugin or in core, you should do it as custom integration.

Maybe https://osclasspoint.com/osclass-plugins/design-and-appearance/price-comparison-plugin-i178 can do the trick...

@atba
We are talking about 1 user from milion that would need that, for me it does not make sense to create such feature as plugin or in core, you should do it as custom integration.

OpenCart may also have thought that why it should be done for one in a million, and WordPress, but they did, because this is a really useful function)))

OpenCart is eCommerce script, managed by admin, so admin is owner of sold items, that make sense... wordpress itself does not have prices.