There could be very good reason for no price showing
Unlike Royal Mail who have standard prices for all parts of the UK., Couriers do not and many parts of the UK their charges can be 2 to 3 times the standard, and as you cannot predict where your buyers will be, so it is impossible to predict prices.
Every day there are members who have a price on their listing and a buyer in Northern Ireland, Highlands of Scotland and other remote areas, where the cost is far higher than the buyer is paying, and they cannot be asked to pay more. Well you can ask, but buyer will not have to pay, and also no way through ebay to pay more.