If you are talking about your page design... It doesn't really kill the product but just lessen the possible conversion rate. However, even if your design is bad but your content (image/text) presentation is clear and concise, design wouldn't matter at all.

I believe every website design is subjective. What I think is a terrible design, someone else may not. I've seen websites that are beautifully designed but very hard to navigate. I've seen sites with great sales copy that had me excited to click the "buy now" button, but had very little creativity in the design. So, which site is a bad/better design?

I think too many sites focus more on the design aspect and forget to focus on the customer. The customer is the one that's going to buy the product, not the designer. Many web designers don't take into consideration their target audience, and their knowledge of the web. Only a small percentage of Internet users understand technology and the Internet.

If your site has a great message (sales copy) wit text you can read, is easy for a novice to navigate (design), and you run a legit business (credible), you will sell your product.

Yes it can.

In fact, the purpose of a website's design is to SELL. If it doesn't convert visitors into paying customers or sales leads, then it's failed its purpose.

Of course. But the design should not to reduce sales.First of all - usability, and then design.

Of course, Poor designs of webpage can affect the viewers. There are some viewers that is checking the design before they explore your site. If you want to improve your sales make sure that your website is attractive.

Yes, design matters but it will not totally kill your product. Besides a product is a products.
But of course, you should give your website a great design because it will give an impression to your potential customers. Any images, video or color you put in your website design will make an impression to your users.

Can a bad design kill a product? Hm...

Let's ask Google.

LoL

I think design = packaging, which means perceived value to customers. YEs, I think it can kill your product, because I think people/ customers/ prospects communicate mostly with visually.

Good design = good packaging = good communication... that will result you a better business ..

After viewing thousands of landing pages and buying multiple products online from various niches and marketplaces I can definitely say that design plays big factor on your conversions.

It's just as important as the copy. I liken the landing page to a realtor attempting to sell a house that has bad curb appeal. Most people judge a house they want to buy by how it looks on the outside. We live in a world of digital aesthetics.

Having a good design represents quality, trust, and creates virtual value.

But the short answer to your question is yes!

It can kill or actually make you sell more, thats why split testing is important. Also the value you have given in your Previous products will determine your success.

Absolutely. People are very visual and judgemental on appearance. Ever looked at someone and just instantly didn't like them? You may have a killer product, but some people will not give it a second glance because of their first impression.

Yes definitely a bad design leads to destruction of a product.

If I really want this product, i would ignore the design, but I do think that the design will affect the selling of it.

Nowdays most of the times the supply exceeds the demand and markets are glutted.
Customers just used to judge products by their packages, in this case design is your package.
If customer doesn't like the design of the website he will use another one.
So yes, design can kill even a greate product.

Good,clean website can help you to gain more reputation a lot. It's psycology fact.