EDIT: Hi, I'm incredibly sorry. I'm archiving tendollardata.com and chartsonlygoup.com (link), as of April 1, 2021. All data will only be up to December 31, 2020. I feel compelled to be on a new mission now (link). All orders should have been refunded already. Quant StackExchange is the only place I've advertised my sites.
There are many data services out there, but one worth using is mine: https://tendollardata.com.
(earnings, daily price & market cap, minute/intraday data, financial statements, 13Fs)
I made my site specifically for those exploring finance/markets (not professionals). Those who want to do ad hoc analyses, to answer specific questions, etc. It's all cheap, one-time purchase dataset downloads with 4 months free update (with really generous support policy). You can view the data in-use at chartsonlygoup.com, e.g. chartsonlygoup.com/aapl.
Anyways, this is a new venture. Made with the understanding that all the financial data out there is free, but the belief that most solutions are awful (expensive, inconsistent APIs, subscription-based) and people are willing to pay for convenience + peace-of-mind.