Step One: Select inexpensive, widely available, well known product. ($9.72/1.1kg on Amazon)
Step Two: Apply shrink ray.
Step Three: Increase cost almost 5000%
Step Four: Place in heavily frequented public area and rake in cash.
You’ll have to excuse me for a few minutes while I find myself some Tylenol. I think something in my brain just seized.
Recommended Reading: Things to Know When Buying a Place and Renting Out a Room