Walmart offers the Blaupunkt 6.5" 360-watt 4-Way Coaxial Speakers for $9.99 plus $5.99 for shipping. That's the lowest price we could find by $7. They feature mylar dome tweeters and a 80Hz to 20kHz frequency response.
Vinegar is arguably the most versatile product in your house. If you aren't using it for all of these purposes, you're probably wasting money.