Prev Next What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)? Rick Lewis A shoebox full of valuable stuff seems to top out at about $2 billion. Surprisingly, this turns out to be true for a wide range of possible fillings. The MicroSD cards are a good idea. iTunes songs cost about $1 each, and MicroSD cards have a capacity of about 1.6 petabytes per gallon. A men's size 11 shoebox is about 10-15 liters, depending on the brand and type of shoe, which means it can hold up to 1.5 billion 4 MB songs (at about a dollar each). (That's about 20 times as many songs as the iTunes store offers, so you'll have to buy some of the songs more than once.) Expensive software like Adobe®©™ Photoshop®©™ CS®™ 5™ has a slightly higher cost-to-megabyte ratio, since it retails for several hundred dollars and ...