Undbid

An inverted paid-ranking board: listing is free, but other people can pay to lift or sink any entry except their own.

How rank moves

Each €2 move shifts another listing one place up or down. Rank is recalculated from sinks minus lifts, with older listings winning equal scores; owners cannot move their own entry.

Pricing signal

Listings are free. Every lift or sink action costs €2, and buying multiple moves does not guarantee a final position.

Reset / duration

The board is continuous and has no free reset: sink history follows a domain even if its listing is deleted and submitted again.

Public tracking

The homepage exposes public per-listing click counts and board-level activity totals; outbound links are marked nofollow.

Moderation / refunds

The rules explain movement and persistence, but do not publish a refund policy or detailed content-review standard.

OPEN ITEMS

Still unanswered

These gaps are kept public so a new launch is not mistaken for a settled marketplace.

01What refund or dispute policy applies to a completed move?
02How are abusive campaigns and automated clicks handled?

Read the board, not just the rank

BiddingDir documents a placement mechanism. It does not endorse the site, the bidders, or the products displayed there.