Instruct: Classify Amazon reviews into positive or negative sentiment
Query: limited to 3 spark plugs?

I was going to order this item. When I went to checkout the quantity was changed from 6 to 3. It said this is a limited quantity item. Why would I only want 3 when my audi is a six cylinder? This is a stupid policy. If it said this on the product page I would not have put it in my cart. Instead, I had to waste time going through checkout only to find I coul not order the number of items I needed.I think I'll start doing my shopping elsewhere.