Not sure about sizing on shell toes but I would probably take size 40. I've only really had the summer editions (perforated/slim sole) and they are great they lasted a while even as beaters. Ill probably pick up another pair next summer(for the 3rd year in a row).
A lot of buyers don't know (more like dont care to look at shipping charges) and buy things and then ask you to take off customs fee. I've had like 4 buyers back out last month just because of that...some will go to paypal some just dgaf and not pay.