Hi Luca,
I'm sorry to hear about your experience. You may have purchased the same product from different channels, resulting in price differences. This may be caused by sales policies, promotional activities, or specific sales channels. We suggest that you compare and confirm that you have chosen the most favorable option before purchasing any products in the future. If you are not satisfied, you can try contacting the seller or relevant department to see if there are any solutions.
Please let me know if you have any other questions.
Best regards,
Jill Zhou