I strongly disagree that this is a good one based on the fact that there are only 37 reported .im sales in the last 5 years, and of those the comparables of arguably better domains are extremely low.
lotto.im 615 USD 2019-05-03 Sedo
tokens.im 500 USD 2018-11-03 Sedo
auctions.im 250 USD 2016-03-25 Flippa
news.im 202 USD 2018-09-27 Dynadot
mom.im 105 USD 2017-06-20 Flippa
domains.im 102 USD 2019-08-27 Dynadot
Additionally I've personally never seen a .im domain ranking in Google, visited a .im website, or seen one mentioned anywhere in any context.
I'd recommend selling it for whatever you can get to whoever finds any value in it.
Best guess:
NP auction: $15
Flippa, Godaddy, etc auctions: $30
Listing on marketplaces and waiting: $97
Really really lucky: $150
Good luck!