As a possible price mistake, GreenWorks offers its GreenWorks 8" Pole Saw Replacement Chain, model no. 29072, for free with free shipping. Although we couldn't find this chain elsewhere, it's $22 under the best price we could find for a 10" GreenWorks replacement chain elsewhere. It's compatible with GreenWorks pole saw model numbers 20192, 20302, 20352, and 20672, or the GreenWorks pole saw bar model no. 29062.