The spell affects 10 gallons of water at first level, leaving you with close to a pound of salt valued at 5cp. That's not going to break the bank, but assuming you spend only one 1st level slot per day every day, in a month that will earn you 1.5gp, putting you somewhere between a Modest and Comfortable lifestyle.edit: turns out these prices are per day, I can't read, and I'm going to die in poverty covered in salty rags
Reminds me of a quest in Genshin Impact where someone was exploring ruins from the dead goddess of salt in the hopes of getting a magic item to sell salt.
The prices listed on that page are per day not per month. So with that in mind 5cp per day would but you at the lowest category of Wretched. Though both level 1 slots would put you at Squalid.