I have two powerwalls that i mostly cycle every day. Lets say its 30Kwh. If i just sold the power back. i would receive $0.12 * 30 that day so $3.60)
If I buy that power, its at $0.32. So, if I cycle the batteries in full, that's $9.60. So, Potentially I can save $6.00 per day.
The units cost...