diff --git a/inema/inema.py b/inema/inema.py
index c19abcd..4b96725 100644
--- a/inema/inema.py
+++ b/inema/inema.py
@@ -13,6 +13,7 @@ import pkg_resources
 import requests, zipfile
 import io
 import logging
+import decimal
 
 __version__ = pkg_resources.get_distribution(__package__).version
 
@@ -93,8 +94,8 @@ class Internetmarke(object):
         return [p, t, k, s]
 
     def get_product_price_by_id(self, ext_prod_id):
-        price_float_str = marke_products[str(ext_prod_id)]['cost_price']
-        return int(round(float(price_float_str) * 100))
+        price_str = marke_products[str(ext_prod_id)]['cost_price']
+        return int(decimal.Decimal(price_str) * 100)
 
     def __init__(self, partner_id, key, key_phase="1"):
         self.client = Client(self.wsdl_url)