Note that if the market is closed, or if
your stock does not have 4 letters, then you may see n/a next
to bid and ask. Each stock does have bid/ask
prices, but only the Nasdaq stocks are publicly available
(you could get the others by having an account at e-trade, or
by asking a stock broker, but that is too complicated for now.)
So, if you have less than 4 letters in your stock's name,
then take the current price and write that down here.
Your bid price will be the current price -1/8, while your
ask price will be the current price +1/8, so now fill in your ask
price above.
There is even a company (called NITE)
that makes money off the difference between the bid and ask price!
But this isn't the total cost, since we must also pay a commission
fee. The following is from e-trade.
Nasdaq (4 symbol name): 19.95
Other: 1, 2 or 3 symbols: 14.95
You pay these fees each time you buy or sell.
They may seem high, but standard commission fees
were a couple of hundred dollars before the (relatively recent)
advent of internet trading sites.