How to bulk edit and schedule prices for a start and end period sale without any error?

Hello Shopify Community, hope you all are doing fine.

I am in dire need for some custom codes or free app that can allow me to bulk pre-set sale period prices without any error. I have search the web and found the .csv file export and import process, paid app and the manual admin panel bulk price which of all I don’t found actually suitable for my cause. I want to show sale prices say from 28th December to 31st December and then revert back to the current prices.

I have around 700+ products (variants included) on my website, the .csv file process seems overwhelming right now and I also found it may cause several error on my website, that will spoil my hard work till now.

Please suggest me some authenticated custom code solution or some free app that I can trust.
Thanks a bunch.

Hi @holygrails_in

We have an app called Nabu for Google Shopping Feed, which allows you to bulk edit most of your fields and push the data to the Google Merchant Center.

Here is a screenshot of our app; as you can see, you can bulk edit the start date and end date of your sale price, which will be updated across your feed:

Please feel free to contact us if you need assistance setting up the app or need any demo. We would love to help you out.