update_product module is used to set all product price as per their shipping cost and basic price of product
to integrated this extension use above screenshot and before integrate add two attribute name "basis_preis" and "versandkosten" in admin and assing to default attribute set
after set this two attribute which is product basis price and shippingcost which are you can decide for each product
and after integrated this extension you can chnage your product every when you need to change
you can change product price as per currency Pfund,Euro,USD
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