depends on 2 factors i suppose.

1. need. when you got to go you got to go! for someone with a bum stomach P10 is way cheaper than having to buy new pants and underwear, not to mention the shame ehehehehe! and this is assuming you will have someone with you to send go buy a pair of cheap jeans and underwear. paano pag wala?

2. hygiene and convenience. how many times, especially for the women, that you go into a cubicle and find it filthy. or worse someone before you failed to flush because there is no water and left his memories swimming in that little golden pond, staring you in the eye and offending your senses (primarily your sense of smell!)

P10 is cheap. if you can afford to give P50 as tip to the waiter that served you that lunch that caused your bum stomach, then you can afford to pay p10 to the guy who keeps the toilet clean where the lunch eventually goes ehehehehe!