Washing oversized pots without splashing water across the counter changes how you use your kitchen every day. Swapping in a deep stainless sink and a pull-down faucet takes a solid afternoon of plumbing work or a quick morning for a hired pro. We usually see the best prices on hardware during major holiday weekend sales in the spring and fall.
Before you commit to a contractor, get at least two different quotes for the install. Prices can swing wildly for the exact same under-sink hookups, and having a second option keeps everyone honest.
Remember that the intro window is a deadline, not free money. If you still carry a balance when those 18 months are up, deferred interest or standard rates will kick in on what is left.