First, it is good Netiquette to comparison shop. So, do check prices. Given, a lot of good deals.
Comparison Netiquette Ecommerce
Next, internet retailers position their products in the market differently. And so, some charge more or less for shipping. Also, many offer discounts and promotions. It follows, newsletters often provide coupon codes.
There is always a better deal somewhere on the internet. Shopping on the internet means comparing, price, shipping and handling, and products and features. Find the internet retailer you fell most comfortable with at your price.
Comparison shop because there are a lot of good deals.