The Subscribestar math on the $2300 looks a bit off. So I made a couple of assumptions here:
460 Subscribers x $5 each = $2300
$5 * 2.9% + .30 = .445 per transaction; $ 460 subscribers = $204.70
$2300 * .95 (5% service fee) = $2185.00
minus $204.70 = $1980.30
This ASSUMES that all of your subscribers are only donating $5 a month. If a subscriber should donate say $10-$20 instead, that mitigates the 30 cents per transaction a bit, thus increasing your income a bit.
Anyways, Based on these numbers, Simply multiplying by .9 or .86 (10%-14% for total fees) should give you a decent ballpark for your income after the transaction and service fees. 90%, or even 86% (if everyone is donating the minimum $5) is better than getting no money at all...
Most developers aren't going to earn $2300 per month out of the gate, particularly on a new platform. Assuming $500 in subscriptions (100 subscribers), the math works out to about $430.50 if everyone donates $5.
OF COURSE, then there's the government's cut (taxes) but that varies from juristiction to juristiction.
I find it interesting that Subscribestar isn't charging fees for cryptocurrency. They do ask for donations though. I suspect that the 5% service fee will find it's way here eventually, so I'd consider this an 'intro' price. Possibly a transaction fee as well (at least one of the coin platforms listed mentions a transaction fee.).
Looking at the Coingate portal, looks like a 1-3% fee...
You must be registered to see the links
For those that fear the crypto, hopefully that's an 'opt in' and not an 'opt out' or 'no choice' situation.
As mentioned, looking at Mr. Dot's Dating My Daughter page, that has a Subscribestar link but (of course) not a Patreon link. Melody still links to Patreon, however, with no Subscribestar link as of yet (at least not on his website page).
Anyways, it'll be interesting to see how many developers succesfully make the move off of Patreon. I think a number of us here have high hopes for Subscribestar, but we shall see...