The distinction that matters is between the recorded sale price and your net proceeds after closing. Legal fees typically run $800 to $1,500, and Saskatchewan charges no seller-side land transfer tax, since title transfers through Information Services Corporation rather than a land transfer tax office, so your net sheet should already account for the standard costs before a concession is added on top.
Some sellers prefer a concession over a formal price cut because it keeps the recorded sale price higher for comparable-sale purposes in the neighbourhood, which can matter if you or a neighbour is selling again soon. The buyer usually does not care which form it takes as long as the number works for them.
Joel Dyck runs the net proceeds numbers before you agree to any concession, so you know the real cost before you sign. Get your hand-reviewed valuation from Joel Dyck.