Cheap Batteries Is NOT GOOD!

Recently the batteries in the house seem to be wear off very fast!As far as I remember, I just changed the batteries for the hanging clock on the living room 2 or maybe 3 weeks ago and now the clock is not ticking at all! I should have invest the money buying the 9v batteries instead of those cheap normal batteries that available anywhere but too bad that it is not easy for me to get this 9v batteries here. Fly them in? it will cost me bomb as it is consider as sensitive item.. =.="