We use fractional shares. But otherwise you are correct, our minimums are set to allow you to buy at least $5 of each member of the US 500.
We do not charge trade commissions. There are some SEC fees charged for trading across most major brokerages. The national best bid offer (NBBO) means you will get executed at the current best price for a given security across all exchanges.
Thanks, regarding transaction fees, I was referring to slippage (should have said transaction cost). This depends a lot on your customers rebalancing settings, but it would be good to be able to compare that directly to VOO.
