Here is how to judge the price. When “price part” appears in the price, normal price will not appear.
{% if product.price_varies %}
{{ 'products.general.from' | t }}
{% endif %}
{% render 'price', price: cheapest_variant.price %}
{% if cheapest_variant.compare_at_price > cheapest_variant.price %}
<del>{% render 'price', price: cheapest_variant.compare_at_price %}</del>
{% endif %}
{% render 'unit-price', variant: cheapest_variant %}