Mumbai Multimedia Studio's deep study on PPC algorithms at Google a changes under the Merchant Center product data specification update (2021) Immediate changes (April 8, 2021)
Checkout price enforcement: Price accuracy between Merchant Center product data and landing pages. Google will begin to review and enforce price accuracy throughout the checkout process. If during an account review find that the price provided for a product at checkout is higher than the price provided for that product on its landing page, Google will send a warning and will have 28 days to resolve these mismatches, and otherwise your account will be subject to suspension.
Region specific shipping speed: Customize shipping speeds for specific regions at the item-level without creating a shipping service by using the new sub-attributes of the shipping attribute: min/max_handling_time and min/max_transit_time. New shipping sub-attributes apply to Shopping ads and free listings, and do not apply to Buy on Google.
Update the availability of your products to “backorder”: You can now specify that your products are backordered when you use the availability attribute. To do so, you’ll need to provide the availability_date attribute to specify when backordered products will become available. You’ll also need to provide the availability_date attribute if your products’ availability is set to “preorder”. This applies to Shopping ads and free listings, and does not apply to products listed through Buy on Google.
Additional values: You can now add the values “big”, “tall”, and “plus” to indicate the sizing for apparel when you use the size_type attribute. You can now also provide up to two values, such as "petite maternity" or "big and tall". The value “oversize” is no longer accepted for the size_type attribute; the value “plus” should be used instead.
Disallow cross-border for payment plan products: Google no longer allow products with payment plans (that is, any product using the subscription_cost or installment attributes) to be listed cross-border using a single feed. To list a product with a payment plan across multiple countries, you must duplicate the product and provide it in a separate feed for each country. Any products with payment plans that target more than one country will be disapproved. This applies to Shopping ads and free listings in all countries where the installment or subscription_cost attribute is available.
Beneath the other subjects in comparing of numbers under the slope data frequencies
Slope chart, a good pictorial diagram to compare numbers.
It will need two dimensions and one metric
One dimension values will be plotted on rows
Other dimension values will be plotted on columns Metric values will be associated in the start of each label
It can handle quite a number of rows of data
I created this chart on 25 frequently sold products in drop shipping
It will measure the progress of units sold quarter over quarter
Quarters dimension is plotted on columns
Products dimensions is plotted on rows
Unit-Sold metric is plotted in the start of each label.
tool used:
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