increase all products prices

Hello there. I have a lot o products 6000+ and I want increase prices from
1 euro to 100 euro increase 30% from 101-400 euro increase 20% more 400 euro increase 10%
Any ideas any plugin?
Or how can I do in fiction.php ?

I have try this and I want code calculation

function change_price( $price )
 { 

????????

 } 

add_filter( 'woocommerce_get_price_html', ' change_price ' ); 
add_filter( 'woocommerce_cart_item_price', ' change_price ' );

• This topic was modified 2 years, 2 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic