The link you provided is a page inside Inline SEO Catalog. Inline SEO catalog shows the prices without taxes as it is necessary to know customer’s address to calculate them, but the search engines usually don't have one.
If you consider that prices should be always shown with included taxes, please, vote for this idea here: http://ideas.ecwid.com/forums/22031-...
and we will email you when it is relesed.
Currently, you can develop custom version of Inline SEO catelog, which will apply taxes to the prices in plain-HTML version.
If you need a professional help with this, I suggest you to contact our colleagues from Qualiteam. Please, send a message with description at firstname.lastname@example.org
Maria Nikiforova, Ecwid Team
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