oni = 250e-ish
yeti = 180-200e
grawl = 100k+30e-ish
asura = 25-30 k
ceratadon = 40k-ish
gray giant = 40-50 k? not sure about this one
greased lightning = 900-1000e
celestial pig = 100k+30-40e
mallyx = 100k+20e-ish
Black Moa Chick = 10k-ish
Polar Bear = uh hard to say, remember last was traded for unded panda 1:1, but it was like 2-3 months ago if i remember good...but price for this is still droping cos it will be farmable in winterfest so i would say around 4000e atm...but i can be completly wrong, cos i dont know if that 1 traded for panda was ded or unded...again, rly hard to say price
Kanaxai = rarest thing in game, there is no price for this, its basicaly how much ppl pay for it...it would probably get some duper who dont care how many hundreds of armbraces he will pay, so it can be 1750 armbraces....if i know good, there was only 1 sold in recent year...there was thread in high end section for this, c/o was 2 pandas + 1000e+ 10 Arms but i bet he got MUCH better offer in game...also, most of em are on perma banned accounts, many were lost due to it...also i think most of remaining are dedicated, and practicaly nobody selling it
ok sry not rarest thing in game, i ment the most expensive thing in game...
about beetle: 1250e no way, seen few days ago some for 1000e as b/o...also Jackstah have 2 for sale currently in high end section with b/o 1050e
also on last mallyx in high end section someone took b/o 100k+30e (i know it doesnt mean real price for it) but still, +15-20 shouldnt be that problem to get