The years that follow the investment carry their own costs: the removal-of-conditions filing, continuing professional advice, monitoring the project, and the effect of leaving substantial capital committed and at risk for the whole conditional period.
The invoice does not end at the transfer
Budgets are built around the qualifying amount and then a series of smaller sums arrive over several years. Some are foreseeable. Administrative fees charged by a regional-centre project sit outside the qualifying capital and do not count toward it.
Professional fees continue after filing, because a matter of this length generates correspondence, evidence requests and a second substantive filing. Government fees are published in the USCIS fee schedule and change over time, so take current figures from that schedule rather than from a planning document. Hypothetical example: an investor from Saint-Joachim-de-Shefford budgets the qualifying amount and a single professional fee, and is surprised three years later by the cost of assembling job-creation evidence for the removal of conditions.
The cost that dominates all of these is the one that never appears on an invoice. Capital must remain at risk throughout the conditional period, which means it is unavailable for anything else, and any plan that assumes the money can be drawn back if circumstances change has misunderstood the requirement rather than found a way around it.