I have all of them in one dedicated watchlist. Haven’t used them as had no free funds and didn’t want to sell out of any of my positions to ride Apple’s short term momentum upward but in hindsight would have been a great play.
What you deal with directly is the typical buy-sell spread which you can see in app details:
Then like an ETF there’s a indirect management/ongoing fees but that’s reflected in the market price you pay.