I redid my kitchen for $2000.
New countertops: $250. Yes, I was lured by granite and quartz, but then I realized that for $5000 less, I can get laminite that looks exactly the same from a couple feet away. I suppose I might have to replace them in 20 years, and get new laminite counters, but I'd still be $4750 ahead.
New sink and faucet: $200. I too was interested in the really expensive stuff, but I got something attractive and highly functional. I went with a deep sink (10" if I remember correctly) and a high arch on the faucet. I can stick anything in there and fill it up. Plus, I made sure to get straight sides and a nearly flat bottom. Thus, I can use every square inch of the sink and never have anything tip over and break.
New lighting: $30. I replaced the center light and I installed halogen lights under the cabinet.
New real wood blinds: $200. Note: my mom works for an interior designer, and otherwise this would have cost $400.
New fridge, oven, and microwave: $1350. I got maximum function / minimum price items. They are a quality brand from Sears, so I don't think they are bad. But I just didn't pay $5000 extra for a "look".
Removing wallpaper and buying new paint: $50.
Sold old appliances: -$75. I could have gotten more, but I just wanted them out of there.
Total: $2005.
Luckilly I didn't need to replace the cabinets or floor. Although a simple reface doesn't cost that much. I've redone floors in the past and it would have only added a few hundred dollars.