For all sales under C$20, Poshmark takes a flat commission of C$3.95. For sales of C$20 or more, you keep 80% of your sale and Poshmark's commission is 20%. There is an additional GST/HST on the Poshmark fee that is paid for by the seller.

why are we buyers and sellers paying fees as taxes again when we already have paid this tax when we bought an item for selling initially.

poshmark in US has no fees or taxes. Then why can’t we have that in Canada, when prices are so high and we can barely afford such high taxes.

This is just unfair & we need to speak up for it.