Hi every one in this version problem with monster eggs is fixed
for server on version 1.9 or bigger version.
To display correct egg you need to set up item like this
Item: 383
# For 1.8 or lover version use old id witch you need to put inside "Meta" Example
Meta: 0
EggType: 'LavaSlime'
Amount: 1
DisplayName: '&4Beast&bToken'
Price: 10
Lore:
- ''
Commands:
- ''
- ''
rCommands:
- ''
# For 1.8 or lover version use old id witch you need to put inside "Meta" Example for LavaSlime:
Meta: 62


All names for egg type you can find here :
https://www.digminecraft.com/lists/entity_list_pc_1_10.php

Enjoy and if find any bug send me PM