Sheesh! Where are you folks getting these condoms from for 7p etc per. ??!
I usually get skins or durex, but it’s typically £1+ per. Ugh.
However yes id never really considered that there are sessions where i don’t use any condoms at all and I guess perhaps it does even itself out ?? I’ll never know.
It’s just infuriating at the time, when someone works their way happily through maybe half a dozen condoms without querying if it’s decent/indecent of them to do so.
I think I just found it cheeky from the last few who have done this, I know it’s my role to supply the tools to get the job done, but if it were me I’d at least ask if it were okay to reach for the third...fourth...fifth packet. Ffs 
THANK YOU!! I immediately went to Amazon & they're no cheaper there than at Walmart. About $15 for a 36 pak at WM so...I dunno (bc I can't do math), about $2.25 per? I think? No, $2.40, just used the calculator lol, but that ain't cheap. Am I missing out on some secret Brit Amazon condom special or something? Jeez Louise😮.