The comparison is needed because different sites deal with the variety and quality of different products. You can also look at the shipping cost of your product and the effect it has on the total cost for the product. The other big thing to look at when purchasing online is the time factor. Some outlets specialize in reselling refurbished wetsuits, try as much to avoid such products. The warranty offer by different outlets vary, find the one you prefer most out of the ones offered. Different online retailers offer different return policies. You might need to return the product to the retailer for replacement. Read and understand the return policy and be ready to take fully responsibilities in the eventuality. Discounts can be a great relief to your budget find a retailer that offers this if any.