$0 to $45k/month in 9 months, here's the breakdown:
month 1-3: $0, built nothing, just talked to 60 people
month 4: $1,100, first ugly version
month 5-6: $4k, $6k
month 7: dropped to $3k (raised prices, panicked, lowered them, learned)
month 8: $19k (raised them again, held this time)
month 9: $45k the price was always the lever. took me 7 months to stop being scared of it