Are payouts made in the staking token? Many staking programs offer compensation paid in the staking token. As you likely want to see projects you hold a stake in grow, look for networks that support additional use cases and demand for the underlying token outside of staking collateral. Alternatively, look for opportunities that pay stakers in ETH or BTC.
As Staked runs the verifier node as a service. You delegate the voting rights of the currency to our nodes and get block rewards minus our fees. When you insist on using currency, this process is not completely risk-free.
If you are collateralizing through a third party, you usually don't have to worry about the minimum requirements, such as coinbase or blockfi. If you want to stake out on the platform, then you will need the least amount of money.