I haven't checked but you are probably correct. For people who have more to invest, the plans will save them money. But for the people that Sharesies started the platform for - those who could not afford to invest via traditional brokers, who have minimal disposable income to invest, the plans are of no benefit.
For the purposes of this discussion I consider a "small investor" to be someone like me, or those Sharesies beginners who can only invest $5-10 a week. If you can invest enough for the $3 monthly plan to save you fees, you're not a "small" investor by Sharesies terms (in my humble opinion anyway).
I know I am harping on. I'll shut up eventually, but it won't be today, and probably not tomorrow. I'm really pissed.