Our great sponsors
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Locker
Ethereum Smart Contracts for locking Ether, ERC20 and ERC721 tokens based on time and price conditions (by pawurb)
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
You can buy the ETH through [Gemini](https://www.gemini.com). They have low fees (0.35%) on trades made via their ActiveTrader interface on desktop and, unlike any other exchange, they offer free withdrawals even for Ethereum. After buying you can then transfer the ETH out to a cold wallet like [Ledger](https://www.ledger.com) or [Trezor](https://trezor.io), which is the safest option to store it long term.
I've created an open-source project that allows you to do just that: https://github.com/pawurb/SmartHold-contracts . This is a bit more involving because it would require you to deploy the contract (cost ~$500 with current gas prices), and later configure it as described in readme. You can check out the origin of this project here https://pawelurbanek.com/smart-contract-development