Manual checking breaks down exactly when you need it
Ten shops across a hundred products is a thousand checks. It gets done at first, then weekly, then when there is time — which means never during a promo week, when the data actually matters most. Automatic collection is not more accurate than a careful person; it just happens every day without exception.
A copied price has no date on it
A cell with a number does not remember when it was filled in, so you cannot answer how long it has been that way. The sheet has no history, only its latest state. Every record in Pricemancer carries its collection timestamp, so stale data looks stale instead of passing for current.
Matching by name does not hold
Shops name the same product differently. A lookup on the title works until someone adds a promo suffix to it. Matching on EAN and manufacturer code recognises the article regardless of how it was titled.
The sheet does not call you
Excel does not notice that a competitor dropped a price this morning — you notice, if you open the file. Automatic collection turns that from something you must remember to do into something simply available when you look.
Excel stays, in the right place
The goal is not to give up spreadsheets. Every view exports to XLSX with your filters applied, so the analysis, pivots and charts stay where you are used to them. What gets automated is the collection, not the thinking.