Can confirm. Default ElastiCache clustering option chooses an extremely high compute node, I ended up accidentally spending $1300 in a month just for testing some Redis clustering script. The minimum option ends up only costing a few dozen dollars a month. The billing alert did not even trigger until the very end of the month, so I got a $1300 surprise. I complained about it to AWS, mentioning how misleading their shit was, and they ended up refunding me $800. Still -- a $500 mistake anyone could make at 11pm. They also made it extra clear in their response that they are not legally obligated to refund me, and that they were doing it out of the kindness of their hearts.

AWS console is some next level outdated shit that needs to be improved. GCP's console is way cleaner IMO. I really hope AWS fixed this after this happened to me, but somehow I doubt they did.