Placement boosting is priced per seasonal placement match in the playlist you choose, so the booster plays the games that set your starting rank each season. The figure tracks the number of placement games per playlist, not a climb between two tiers. Set the playlist on the Rocket League placement page, or aim for a defined tier after the season opens with rank boosting.
For a rough anchor before the live widget settles it: a placement match in the lower tiers sits in the low single digits, a full placement set across one playlist lands in the mid double digits, and placements aimed near Champion and Supersonic Legend cost more per game because the MMR a booster must show is higher. If you only want to bank wins after placements settle, a win order charges per victory instead.
Use the grid below as a yardstick for the figures the live widget returns, handy for checking that an order looks fair before you commit. The placement page reads your exact playlist, target rank and prior MMR, so it stays the source of truth.
USD bands for orientation only. Each order is priced from your live playlist, target rank and prior MMR, so the widget on the placement page settles any difference. Switch to the rank boost view if you want a defined tier once the season is open.