
Samsung's last year Galaxy S flagships are still solid top-tier phones by today's standards, but their priced have dropped considerably. The Galaxy S9 can be had for around $600 outright, while the Galaxy S9+ costs just $100 more. Of course, Samsung is running promotions on all its flagships smartphones, so you can get them cheaper almost all the time.
However, if you can't afford to pay so much for a high-end Android smartphone and you don't want to commit to a long term contract, one of the best alternatives would be to buy a refurbished unit.
The Galaxy S9 can go as low as $350, ...