Using GemPages on your product pages?

If so - you need to adjust the currency formatting.

On your Shopify Admin, go to Settings > General > and click "change currency formatting".

Instead of

<span class="money conversion-bear-money">${{amount}} USD</span>

and

<span class="money conversion-bear-money">${{amount}}</span>

Use

<span class='money conversion-bear-money'>${{amount}} USD</span>

and

<span class='money conversion-bear-money'>${{amount}}</span>

meaning - instead of double brackets (") use a single bracket (').

Save your changes and you're all set.