Depends entirely on where you are buying. Last I checked, Coinbase for example (not Coinbase Pro) charges a flat fee of $2.99 for a trade of $200, but a 0.5% fee for trades above $200. So 7x $200 trades would cost $20.93 in fees, whereas 1x $1400 trade would only cost $7.00 in fees. Gemini have a similar structure with flat fees for small trades and percentage fees for larger trade, which again works out better if you make a single larger trade rather than multiple small ones.