The problem is not that the user doesn't see something. The problem is that the search robot sees the page completely differently.
What Googlebot Sees
Googlebot indexes pages during initial rendering. According to Google Search Central, JavaScript rendering may be delayed: first, the HTML version of the page is indexed, JS may be processed later or not at all.
Suppose you are promoting a page for the German market. In Google Merchant Center or in organic search results, the buyer expects to see the price in euros. If your microdata says “4500 RUB”, it's not just unsightly — Google may not show your products in local shopping results.
An SEO strategy for a specific market assumes that the content on that page matches the audience: language, currency, context. JS conversion gives the illusion of localization, but the indexable content remains in its original form.
Via Google Search Console: “URL Inspection” → “View Crawled Page” → “More Info”. This shows the HTML that Googlebot received. Look for your prices — in what currency they are specified in the priceCurrency tag of the microdata.
Do you want Googlebot to see the correct prices?
We will show you how it works on your store — we will set up a demo and check it together.