So, for example the red page that shows all red products is at:
And some red products are:
http://example.com/red/product2 http://example.com/red/product9 http://example.com/red/product840
The website only sells 1 of each product.
So a product it is sold, it is moved to another page at the same level called sold. (This page is important for future visitors, so that they can see what has been sold and that the website is reputable.)
This sold page is found at the following link:
Now the question is:
Once a product is moved from appearing on the red page, to the sold page, should:
A) its URL stay the same, or
B change to be like this — with a 301 from the old link?
http://example.com/sold/product9So it's a trade-off between having either spotless hierarchal information architecture, vs. keeping any existing SEO efforts, and avoiding losing them by using (frequent) 301s for about 10-40 sales a year.
Future SEO campaigns would involve ranking for words like red, blue, and so on as keywords. But not for the word "sold".