Question: I'm looking for a cryptocurrency investment platform that automates buying and selling for me.

For an automated cryptocurrency investment platform, Soon is a good option. It connects to major exchanges and offers auto-buy and auto-sell options, as well as more sophisticated investment algorithms. The service also does dollar-cost averaging and tax-loss harvesting to help you hedge against losses. Soon offers a range of pricing tiers from $19.99 to $159.99 per month depending on your needs and budget.

Another option is Pionex, which automates and optimizes trading with spot trading, futures and AI trading strategies. It supports more than 379 coins and tokens, and you can use 16 pre-built bots to automate trading. Pionex has a low trading fee of 0.05% and a high uptime of 99.99%, so it's good for serious traders looking for a powerful and reliable service.

DipSway is another option, using AI for fully automated trading with a variety of strategies and indicators. It supports multiple exchanges and offers detailed performance reports and good customer support. DipSway offers a 7-day free trial and pricing tiers from €19.69 to €129.69 per month.

Last, 3Commas offers smart automated trading tools to help you optimize your investment portfolios. It supports trading on 14 major exchanges and lets you monitor performance across multiple accounts. With DCA, Grid and Futures bots, as well as analytics dashboards, 3Commas offers a lot of tools for automated trading. The service offers several pricing tiers, including a free Starter plan.