2009 VR malachite (tbh i saw people calling this pet by different names but they were always talking about the same one haha) dog is worth the three month rule or 2 09 rares
on gonna try to break down their side pet by pet so sorry if this gets long haha. anyone reading PLEASE feel free to correct my math because i may get things wrong!
on their side - they have two 2010 rares, a 2011 rare, a 2011 uncommon, three 2012 uncommons, one 2012 common, two 2012 rares, two 2013 uncommons, one 2013 very common, three 2015 commons, two 2018 very commons, and a 2020 common.
adding them up: two 2010 rares = 1 09 rare, so half of your pets value
two 2012 uncommons equals one 2011 uncommon. that combined with the other 2011 uncommon equals one 2011 rare
two 2012 rares = one 2011 rare
two 2011 rares = a 2010 rare
to recap - right now the value of their pets is one 09 rare and one 2010 rare
then we have the rest of their pets, which is one 2012 uncommon, one 2012 common, two 2013 uncommons, one 2013 very common, three 2015 commons, two 2018 very commons, and a 2020 common
okay, two 2013 uncommons equals one 2012 uncommon. that combined with the remaining 2012 uncommon equals one 2012 rare.
two 2018 very commons equals one 2018 common
two 2015 commons equals a 2015 uncommon
one 2012 common
one remaining 2013 very common
one 2015 common
2020 common
at the end of it - on their end we have one 09 rare, one 2010 rare, one 2012 rare, 2012 common, one 2013 very common, one 2015 uncommon, one 2015 common, one 2018 common, and one 2020 common.
to be honest with you. i really do not want to break up the rest of the values even more, but i think its safe to say their offer is under the value for your pet - there really isnt a need to break the pets down into decimals lol. if i were you, i could not accept this trade. but if anyone else wants to chime in or correct me please do so