Being able to see how much shipping is and how much needed to pay in BTC without entering contact details would be nice.
Shipping is a flat rate of $1.69 in the US and $6.75 worldwide for any number of singles.
The amount paid in BTC is based on bitpay (note that we keep the BTC we receive in BTC, unlike many other vendors using bitpay).
Thank you for the suggestions, this information will be made more clear for the future.