If you have long engagements this problem is moot.
Look at many chasidim with long engagements and the couple living where the Kallah lives. No freezer anywhere in sight. And no girls Shidduch crisis either – one of the reasons for the long engagements — no one is so desperate to finally get married, and many boys are actually still too young so they drag out the engagement.
And most teachers teach half a day only, so despite tons of prep especially the first year they can try to get additional part time employment — which needs to be considered when looking at their salaries although it remains petty.