Earlier changes in the concentration contributed to both the initial and final values of both concentration and temperature. (judithcurry.com)
In return, eBay rewards your generosity by crediting the insertion and final value fees back to you, equal to the percentage of the final selling price that you elect to donate. (RescueAnimalMp3.org)
If we further assume final value is 1.5 M, and each unit is 50k, then I just got 30 «free» units. (biggerpockets.com)