And two pair means I can still find a pair of reading glasses when the other pair is pushed up to my forehead.
If I have to invest more mental energy than walking into DollarTree, that's a bigger problem than the two dollar problem.
Find problems that are worth $10,000.
You only need 0.02% as many customers to make your nut. And the problem is big enough that people will be happy to pay.
Good luck.