Pablo Escobar was making so much money, he spent $2,500 a month on rubber bands to bundle up his stacks of cash :

Colombian drug lord Pablo Escobar was making so much money, he spent $2,500 a month on rubber bands to bundle up his stacks of cash. Pablo was earning so much that each year he writes off 10% of the money because the rats ate it in storage or it got damaged by water or lost.
         In most businesses, seeing a return on investment (ROI) of 100% would be more than enough for a company to thrive. By some estimates, notorious Colombian cocaine kingpin Pablo Escobar enjoyed an ROI of as much as 20,000%. Put another way, for every $1 he put into his business, he got about $200 in return.

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