HP Instant Ink's Subscription

I recently signed up for HP Instant Ink’s 3-month trial and my trial is coming to an end… Should I continue with the subscription? Any of you continued with the trial? More info about HP Instant Ink for curious mummies: https://www.hp.com/sg-en/printers/instant-ink.html?jumpid=af_sg_tap_mk_ot_CM016747_aw_non&utm_source=tap&utm_medium=affiliate&utm_campaign=instant-ink&utm_content=sg009