At 10 or 20 SKUs, you can convince yourself you are watching your prices.
At 50 SKUs, it starts getting annoying.
At 100 SKUs, bro, you are not keeping up.
The mistake is waiting until you are already overwhelmed before learning repricing.
Amazon Canada prices move all day. The buy box can shift, sellers can adjust, and your price can become outdated faster than you think.
The decision rule is simple:
If a SKU is meant to move, price for velocity.
If a SKU has room and the market is slower, protect margin.
Do not treat every product the same just because your spreadsheet shows 30% ROI.
And if you are Canadian, remember the software cost is usually in USD. So a $47 USD repricer is closer to about $65 CAD. That cost needs to make sense for where you are at.
But do not wait until you have 100 listings to learn the tool. Learn it on a few ASINs first, while mistakes are small.
Pick one product this week and ask yourself:
Am I trying to sell this fast, or am I trying to hold margin?