A good vacuum-powered or motorized record cleaning station gets deep into the grooves to strip out static and years of grit so your vinyl actually sounds quiet. Buy a sturdy unit built with decent parts once, and you won't have to replace a burned-out motor or warped basin in a couple of years.
Holiday sales are the right time to buy because audio brands drop prices to clear inventory before the new year's batch rolls out. If you see last year's model sitting on the shelf next to a newer version with just a cosmetic color change, grab the older one and keep the savings.
That 0% intro window is a hard deadline, not free money, so make sure you pay off the full balance before those 18 months run out or you will get hit with interest charges on the whole starting amount.