Hidden power is Steel; super effective against fairy and ice pokemons which can target this big boy. If you worry about 02 spdef, its still 454 sp def with assault vest, almost as good as Chansey.
Starting offer is 1m, min raise 200k, 2M INSTA PRICE, 3 days auction after first bid.
Accept;
cc/nature reroll: 300k
Iv reroll: 600k
Shiny mounts:200k
Assault vest/rocky helmet/Choice items/etc: 100k
Goodluck.