I also used to cancel often, I would accept 30 day trials and then immediately schedule cancellation for the end (it's really nice that they actually let you do that instead of making you wait until just before the end). They just kept offering 30 day trials so I kept doing that. Nowadays I use ebay as much as possible first, and accept 30 day trials if offered when I have to resort to Amazon. To help make up for it I always make sure to use the included twitch prime sub on a streamer I like, also surprising that prime trials include a twitch prime sub.