The COVID-19 pandemic doesn't appear to have impacted retail rates or the increase in purity recorded given that 2010 in major ways, even though a slight increase in price in addition to a stabilisation of purity might be observed in 2020 (see Determine Indexed tendencies in copyright retail value and https://marcoyvtqm.wannawiki.com/407351/detailed_notes_on_buy_copyright_online_in_uk