The real question is HOW LONG this will work? For the costs of a quick temporary fix, you may be doing it many times until the root cause is finally solved. It adds up, and no one can really say how long a temporary fix will work. The biggest factor is the extent and the root causes of the damages.
I highly recommend that there has to be an evaluation and estimate of costs to make an accurate decision. I mean 2/300 bucks that only lasts a month is a waste. Especially if interior damage is more prevalent to the outside walls.
Cost of Repairing and Sealing a Basement - Estimates and Prices Paid
The first step in
waterproofing a basement is to improve your home's drainage, so water flows away from your foundation and downspouts don't deposit water right next to your home. But if better drainage doesn't solve your basement water or moisture situation, you may then want to repair and seal problem areas in your basement.
I can tell you that any interior sealing of basements walls will barely make it to the next big storm or weather event. It's what you can't see that will get you.