I agree with these questions. How much would it take to build the MVP? If it's not much, I say go for it.

However, if the MVP will take a long time/money to build, I suggest testing the market before you even build it.

Is there a way for you to contact potential buyers? Can you talk directly to them? Can you set up a landing page that explains this product and drive traffic to it?

If you can contact 20 potential customers and pitch your product, that would be great. You'd get an idea of whether they'd buy it or not. Maybe they wouldn't due to a problem you aren't seeing.

If 1/20 want to buy it, maybe it's not such a good idea.