We were going out of our minds trying to figure out which gas detector to buy for our house. I told my husband that I could not take it anymore and he should make a choice. All the gas detectors we have looked on the Internet were good quality items and they were affordable. My husband heaved a sigh of exasperation and he suggested that we take a break. Suddenly, I had an idea! I told him that we could make shopping-comparison on several choices of gas detectors. However, we need to look for a specific website that allows people to compare the prices, specifications, and features. For example, we are looking for gas detectors, thus with shopping comparison feature, we could compare three or four different detectors from different brands. This feature allows us to go through all the items on one page without having to go back and forth between websites.