Sliding into cracked or faded factory seats gets old fast, but a fresh leather interior makes an older car feel brand new again. Running this upgrade takes some patience, especially since local upholstery shops usually sit empty during the dead of winter and mid-summer, making those the best months to walk in and ask for a break on labor.
You should always negotiate the price of the job completely separate from how you plan to pay for it. A credit card window is just a tool to spread out the bill for the deposit and parts, never a reason to spend more than you planned.
Remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still have a balance left on the card when those 15 months are up, interest kicks in on the whole original amount at the standard rate.