this has been happaning to me from time to time, i allways thought it was on my end but as i've seen a few peeps complain about it then may be not, i dont know - anyway ive found if you log out and back in seems to fix it but with the loading times as they are atm its become a bit of a pain tbhNO ONE TAKES DAMAGE WHEN I SHOOT THEM!
as for things going on sale, what can you do about it, ive been stung with buying stuf at full price and then a sale happens before, its a pain and it stings but thers feck all you can do about it, its just bad timing - **** happens