Are you using the marketplace integration in DealPOS? If you do so, this Price Comparison feature will be very useful for you in managing prices between POS and connected marketplaces. The main functions of Price Comparison are to:
To change the selling price on the marketplace without entering the seller center marketplace
To change the price in the marketplace, based on the price in the POS
So you don't need to change prices manually in the marketplace because everything has been integrated with DealPOS.
I. Price on Marketplace Apps
Step 1. Select price Menu on marketplace Apps

II. How to change the price in the marketplace
Step 1. click Price on tab channel - input new price then save
Here I want to change the price for product Jeans (37) on shopee:

Step 2. Refresh your browser on the shopee page
The price will automatically be changed from Rp149.000 to Rp200.000

III. How to update marketplace price based on POS price.
Step 1. Tick SKU then click update
Tick SKU that is different between POS and marketplace, then you can update it based on POS price.

Step 2. Select marketplace then update
For example, I choose Shopee

Step 3. Refresh your shopee page and it will automatically change the price
Price changed/updated following the POS Price :

You might also like to read this article:
For the Shopee marketplace channel, the validity period for integration is only 1 year, and if it has passed 1 year you need to renew it, the steps can be checked in this article: Renew Shopee Authorization.
If you want to know how the Shopee Integration flow works, you might want to check Shopee Order Status Flow in DealPOS.
And you could even check How to Calculate Admin Fee on Shopee
If you are a retail business owner and sell products offline and online stores. you can use DealPOS to manage products, inventory, and orders on one platform. DealPOS made it easier for you to sell omnichannel. Try DealPOS for 14 days for free now :