I'm not going to put off what little random chance pussy I get because I don't have a condom, and I've always been too poor to spend 15 bucks on a pack of condoms I'll likely never use.
I grew up in Arizona where sexual education consisted of a 10 minute video shown to me in the 5th grade and there were no clinics passing out freebies.
You also can buy condoms at a pharmacy or online that aren't one of the big brands that work just as fine.
Most condoms I bought have an expiration date which is 3-5 years from their purchase date, if you indeed get such a little chance to have sexual encounters I'm pretty sure that even at 15$ a pack would last you plenty of time.
P.S.
I guess this is a non-US thing but quite often females also carry male condoms if they go out looking for sex. Going out in search of a random sexual encounter and not having protection on hand is simply irresponsible way beyond the risk of an accidental pregnancy.