Saarvin level 17 room

Can anyone advise if the contents of the level 17 room chest is worth the 28k it takes to level him to 17. THanks

It’s completely random. I opened lvl 19 Saarvin room and I looted 3k gold and common/rare items only. But if you are lucky you can find a Legendary. But it’s random. You can find a Legendary card also in level 3 chests.