That is the key on a product like this. $5+/mo for a service to occasionally update photos on a device that is already sold at a profit is robbery.

If you're pushing to fewer than 5 frames per account then their free tier works fine. They used to cap the free tier to 1000 photos (we just deleted older photos to keep the collection fresh) but now the free tier supports unlimited photos. I'm sure some day they'll go bust or get bought and it'll stop working but I feel like we've already gotten our money's worth out of it.

Honestly I considered trying to hack one but just never managed to put it on the schedule. Early models had some quirks but now they're reliable enough that I haven't found any pain points that would compel me to open one up so if I ever get around to it it'll be just for funsies.