Price history
The buy-now price at every check, and the move since it last changed. A price that slides a złoty a day is visible as a line, not a memory.
Paste an Allegro offer link. Competitor Tracker reads it once a day and keeps the price, stock, buyers and reviews in view — with daily sales worked out from how far the stock moved, and a note when something changed.
Their buyers come to you without a złoty of ads — if you know on the same day. A price cut you answer in the morning keeps the buy box; one you notice on Friday has already cost you a week. Competitor Tracker turns both into a notification instead of a routine.
One link is all it takes. Marzi checks it is an allegro.pl offer, reads the page for the first time on the next sweep, and the change columns start filling from the check after that — a change needs two readings.
Every offer opens into three groups. This offer: what that seller is doing — price, stock, units per day, reviews. Competition: the same product from everyone who sells it, and this seller's share of the card's buyers. Change over 30 days: the last check against the one a month before.
Price changes, stock-outs, a shared box, sales that sped up — Marzi records the event and shows it in the cabinet, so the daily check is a glance rather than a routine.
Every figure on the screen has the page it was taken from and the method printed next to it. These are the parts.
The buy-now price at every check, and the move since it last changed. A price that slides a złoty a day is visible as a line, not a memory.
Where the offer states its stock, Marzi reads how far it fell between two checks. That gives units sold — Allegro's own count where the offer shows one.
Own shelf, held level, shared box, or not decided yet. Marzi watches seven days of readings before it says which, and prints the method on every sales figure.
Every seller of the same product, this seller's slice of the card's buyers, and where their price stands among the rest — nothing wider than the card.
The card's rating and review count over time — shared by every seller on it, and labelled as such.
Price changes, stock-outs and acceleration are recorded per offer, with the underlying readings shown under the bell in the cabinet.
Marzi says which is which on the screen itself. Here is the short version for Competitor Tracker.
Watch the three sellers you will be up against for a month before you order: how often they cut price, how fast they sell, whether they run dry.
Keep the competitors that matter in daily view and stop reopening their pages by hand.
Track the resellers of a brand across offers and see who moves price first — and who follows.
Any allegro.pl offer link. The field checks it before the button lights up; a product card link needs an offer inside it, otherwise open one offer and copy that link.
Once a day. The first reading happens on the next sweep after you add the offer; changes appear from the second reading, because a change needs two points.
From the stock. When an offer shows its stock, the fall between two checks is what sold. Marzi first watches the offer for seven days to understand how the stock behaves — its own shelf, a level the seller tops up, a box shared with other offers — and states the method on every figure.
Several offers from one seller draw from the same stock. The buy box's drop is then split between them, and the figure is marked as an estimate rather than a count.
The same product from everyone who sells it: how many offers are on the card, how many of them sold anything, this seller's share of the card's buyers, and where their price stands. It is the card only — not the category, not the brand.
Yes. Through AI Integration, a connected assistant can read your tracked offers and set up its own watchers on price, stock or a competitor's offer.
7 days, no card required. The whole index, your trackers and the MCP endpoint are live from your first sign-in.