Of course, I'll do that when we get there. I am generalizing from my typical experience, which is that international chain hotels, even in low cost countries, really stick it to you for laundering undergarments and socks -- and in this case, I will be paying for 4 people's worth!
I consider it to be a ripoff when the hotel charges roughly the same amount to launder the item as it cost me to buy it. I see this all the time, although I suppose one could argue that the real problem is that I need to buy better quality underwear....