Look up the manufacturer on the slow cooker itself and then look up the manufacturer's phone number or web site on Google, Bing, etc. Before you call, find the model number on the slow cooker itself and have that ready for the customer service rep. It'll prolly be about $5-15, not including shipping costs. It'll prolly be up to $20 for everything. They'll prolly only take credit card or Pay Pal. Pay Pal is a temporary credit issuer that'll charge you a fee for them paying for the product or replacement part you ordered. You'll get the product or replacement part delivered to your door, then Pay Pal will send you a bill every month until you are all paid up. The other way to find a cover is to shop at thrift stores. Either draw the slow cookers mouth onto several sheets of paper, or take the slow cooker with you, explaining to the thrift store cashier or manager that you are bringing the cooker from home to try and find a lid. Once you purchase it, wash the lid with a bit of bleach or good fish soap to get any germs left on it by the previous owners. They're usually about $2-4, if you can find the lid. Sometimes you may have to buy the whole slow cooker as they won't separate the lid and cooker. Sometimes you can bluff and tell them the lid was by itself, and you need a price on it. Sometimes you won't find a thing, so good luck! One more thing, ask the manufacturer if they can send the lid to a K-Mart, Walmart or Target, then ask those same stores if they'll take an order from the manufacturer so you won't have to pay the shipping fees. Call the manufacturer back and give them the okay to send the part to a specific store. I don't know if this will work, but it's worth a try, if you can't find it a the thrift stores. Good luck again!