I agree. Spend the right amount of money to get the quality, durability, and ROI you need from the tools you use the most.
Some items aren’t worth the investment, since the return isn’t that great or their lifecycle is too short (i.e., I’ll need to buy another one soon anyway). It would be like buying the most expensive high-end DVD player years ago, only to discover that streaming rendered it mostly obsolete before you know it.
But, other “tools” can provide several years of value, or provide such an immediate ROI that they more than pay for themselves. I would guess that doubling your writing output easily covers the $14.99 subscription. It’s also hard to put a price on reducing the frustration and friction that a crappy tool creates.