D $1,000.00

P 2009/01/01 13:30:00 AAPL $10.00
P 2009/01/01 14:30:00 AAPL $20.00
P 2009/01/01 15:30:00 AAPL $30.00
P 2009/01/01 16:30:00 AAPL $40.00
P 2009/02/01 17:30:00 AAPL $50.00

2009/03/01 Purchase
  Assets:Brokerage       100 AAPL
  Income

test prices --prices-format='%(datetime) %(scrub(display_amount))\n'
2009/01/01 13:30:00 $10.00
2009/01/01 14:30:00 $20.00
2009/01/01 15:30:00 $30.00
2009/01/01 16:30:00 $40.00
2009/02/01 17:30:00 $50.00
end test