Most buyers in Saskatoon are represented, and their agent still expects to be paid, typically out of the sale proceeds under the listing arrangement a for sale by owner seller has to negotiate separately. So the realistic saving is the listing side only, minus whatever a lawyer, photographer and MLS access provider charge to replace what an agent normally bundles in.
Legal fees for a seller run $800 to $1,500 regardless of who lists the home, since a lawyer closes every Saskatchewan sale. That cost does not go away with for sale by owner, and neither does the work of pricing, marketing, and negotiating an offer, which now falls entirely on the seller.
Whether the remaining saving is worth the time and risk depends on your specific home and situation. Get your hand-reviewed valuation from Joel Dyck.