# . Market prices are ignored by -B/--cost.
hledger -f- print -B
<<<
P 2011/01/01 € $1.35

2011/01/01
    expenses:foreign currency       €100
    assets

>>>
2011/01/01
    expenses:foreign currency          €100
    assets                            €-100

>>>=0

# # 14b. market price used in balancing - this should balance
# hledger -f - balance
# <<<
# P 2011/11/15 EUR CHF 1.234
# 2011/11/19
#     a                             EUR 1000.00
#     b                             USD 1000.00
#     c                             CHF -1254
# >>>= 0

# . Market prices are used by -V/--value.
# They are affected by D directives, currently.
# They contribute to amount style canonicalisation.
# (https://github.com/simonmichael/hledger/issues/131#issuecomment-133545140)

hledger -f- balance -V
<<<

D 1000.00 H                ; declare a default commodity named H

P 2015/08/14 EEEE  41.66   ; default commodity H is used for these market prices
P 2015/08/14 FFFF  74.62
P 2015/08/14 GGGG  32.39

2015/08/15
    a  2.4120 EEEE @@ 100  ; default commodity H is used for these transaction prices
    a  0.3350 FFFF @@ 25
    a  0.7718 GGGG @@ 25
    b                      ; implicit balancing amount is in the cost commodity, H
>>>
            150.48 H  a
           -150.00 H  b
--------------------
              0.48 H
>>>=0