Quote from: https://www.thebigcoin.io/faq#faq-8
We charge between 7% and 12% of the order subtotal, or the minimum 5 EUR/6 USD/5 GBP fee per order based on the currency you process your order. Customer service fee is calculated using a variety of factors including, but not limited to, the order subtotal, size of your order, cryptocurrency which customer payment is received. Some cryptocurrencies have high transfer fees, or some like Monero requires us to make two transfers to reach the exchange wallet, otherwise, we can’t change it into FIAT.
I'm trying to find the shipping fee terms but I don't find any from faq page if shipping fee is included when ordering a product.?
Also, you can notice on the footer of the page there is two link where you can buy ethereum and bitcoin with a debit/credit card. I don't think how safe they are but I don't find any real reviews on their official thread shared by mjglqw except for one high-rank member it seems an alt?