sync ultra is ongoing costs it's mainly features that require dedicated servers and subscriptions from LJ like translation requiring paying google cloud setting sync requiring servers to store it there's a plain ad free only that's lifetime for $20
So is the developer guaranteeing, say, 6 years of support for every Lemmy backend update? Because I'm not paying what sums up to be 6 years of the regular subscription price upfront.
You can't have it both ways: if the developer won't promise long term support, the pricing can't be justified based on "long term updates".
Well I've used Sync Pro for reddit for over 11 years with constant updates and I only paid 1.99 for that so I have pretty good faith in the developer this go around...