Both would qualify for Free under the Tradestation promotion or many broker "new" account promotion. Also both free on the free platforms. The fees attached would be orf and or clearing. Index options would still about 1/2 buck of exchange fees. Most of the free deals limit your routing, but you're subject to best ex. and NBBO protection. SPY would not be an issue for either the cash or the option with so much competition. Plus SPY trades global trading hours if you broker has access.