Biggest price drops

The strongest price drops of the last 30 days, biggest first. The percentage is always against the typical price we measured: the price that held longest in the two weeks before the drop. The "was" price the store writes on the listing doesn't count. Left out: products with fewer than 10 sold, and prices that went up before coming down: if, in the last 30 days, the product already cost the same as today, less, or only a little more (up to 5%) and then went up, today's "drop" only undoes that increase. A drop that is over also leaves this list.