2. You take 1 BTC of your invested stack and buy whatever product you want
3. The you rebuy 1 BTC with fiat
So you only spend 1 times the fiat cost of the item you bought (although probably less due to all the benefits of Bitcoin)
Sigh. Can you please list ALL the fees that you pay when you purchase with bitcoin as you described, and the fees that you pay when paying directly with money?
(Don forger that you must send money to Coinbase/BitpayPayPal/exchange or whatever in order to buy th ebitcoins, and that Coinbase/Bitpay/Paypal has to send the money to the merchant.)
No fees when you use Circle.