If a buyer is in the maximium tax bracket Flow Through shares end up costing the buyer about 40-50% after tax deductions depending on the province they reside in. This is because the company's exploration expenses from spending the PP money on exploration "Flow-Through" to the buyer and they use it as a deduction/credit at tax time. You also have the capital gains potential. If you are in the max tax bracket and you can buy flow-though shares in a good company they are great.
For current share holders they are also great. Money acquired by a Flow Through share PP MUST be spent in the current year so expect to see at least $20 million being spent this fall on 'eligble exploartion expenses'. That $5 million a month starting in late August is a LOT of drilling and other field work.
$20,000,000
= LOTS of Exploration Activity
= LOTS of News
= LOTS of Share Activity
... Been There