Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fits Eureka commercial model vac ... Works fine ... great price ...

These fit the Eureka commercial model vacuum cleaner, simple but effective design which I don't think has changed in last 50 years. Other than needing the replaceable bags and the belt, these units are virtually indestructible. On the other hand, my bagless unit has 18 different filters that gets all clogged at a different rate. I spend more time cleaning the darn filters than vacuuming on bagless cleaners. But I digress ...OK, these bags are cheapest on Amazon per bag but works just as well as more fancy (expensive) ones from Arm & Hammer and are micro-lined as well. They come 9 bags per pack which is fine with me. Local Walmart store is always out of stock on this item. On Amazon, it's cheaper and always available. Good deal!