[joezydeco]

The supply of Bitcoin is ridiculously tiny. Only 11,000,000 in total are in circulation today, let alone available for purchase on the market.

Bitcoins can be divided to 8 decimal places at the moment (it could be expanded). So instead of 1.1e7 units, isn't it 1.1e15 units?

[wmf]

Yes, but the exchange rate is quoted in BTC.

[joezydeco]

So? Everyone knows how to do the necessary math.

One Japanese Yen currently costs $0.0104715 USD. The price fluctuates down into the lower decimals. People deal with this every day.