If you don't want to display the offers which don't match your price policy, you can use price filtering in your plugin. To do it, you need to add specific tags, which you can find below. You can use one or both tags.

Bottom price limit

data-bb-price-bottom-limit="{bottom-price}"

Top price limit 

data-bb-price-top-limit="{top-price}"

Exapmle

This plugin will show only the offers priced between 640,00 and 665,00.

<div 
   class="bb-widget"
   id="buybox-7djt"
   data-bb-id="1123"
   data-bb-number="5906006234744"
   data-bb-price-top-limit="665.00"
   data-bb-price-bottom-limit="640.00">
</div>
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