starting an online company?

[Jake]

The actual site coding is such a small part of the overall process of setting up an online business, if you are not already up to speed with web development it may be wisest to buy a pre-designed template a a starting point or outsource some of the work. Having said that I should mention simple template or ecommerce host service stores I see with undersized images an an 'old school' look that I can't imagine ever becoming profitable.
If running n online store it's vital that the shopping cart and payment processing processes work flawlessly from the start. "excellent online sales" would be in part the result of sales page optimization, don't assume the first design that pleases you will do the best job oc converting visitors to buyers, people paying for visitors are particularly aware of their site conversion rates and employ split testing software to identify the optimal design variations.
One source of pre-designed sites of every description is Templatemonster.com

If the actual code business is selling things, do consider starting at some marketplace like Ebay or Amazon which can send you prospects and help handle the sales process with a minimal effort on your part, paid advertising to bring prospects to a site is the largest single expense for some online stores.