Cheapest way to buy buy bitcoin

I live in the US and have started to DCA in BTC and move this into cold storage ~weekly. What is the cheapest way to purchase BTC in the US? I have used Coinbase and Robinhood but am wondering if cash app or other exchanges are better for the way I am buying. Thanks in advance !

For your purchasing strategy, using Cash App or other exchanges might be more cost-effective compared to Coinbase or Robinhood due to potentially lower fees. Cash App, for example, allows you to buy Bitcoin directly from your bank account without fees, although the price might be slightly higher than the market rate. Other exchanges like Kraken, Binance.US, or Gemini could also offer competitive fees for buying Bitcoin. It’s a good idea to compare fees and prices across these platforms to find the most cost-effective option for your DCA strategy.