Sure, I pay less than a dollar most months then in my busy months I’ll pay a max of ~$20 for my backend.

It’s event software, like for a food festival. Most of the months there is almost 0 traffic, for 1-3 months there is lower traffic as pre-sales start with random spikes when the event organizers advertise, then for 1-5 days there is high traffic peaking on a single day or two during the event.

Because the load is incredibly spiky it’s nice to let Lambda scale automatically for me. Trying to scale a server, even bare metal, manually would be a pain in the ass. Even as I run this software for multiple events it’s cheaper than $5/mo and a $5 instance wouldn’t be able to handle the load at peak.

If my lambda bill ever got higher than an average of $20/mo I might consider a bare metal or VM server but honestly I prefer not thinking about it. And the profit dwarfs the server costs, like it’s not even close. The lambda server costs, even if they were 50x, would still be minor.