I want to do some SEO for products in my online store, i have a lot of product and i want to know if you thinks i should do seo pointing directly to my website or to buy an other website , do subdomain for each product and do a redirect 301 to my main website product page. Or if you have other solution tell me Thanks for your time
You needn't to do subdomain for each product. If you have many goods, you can make subdomain for categories if there are any. If no - just optimize list and add social media.
No need for a redirect or subdomain. Ecommerce stores are actually already really good SEO wise, based on product names and page titles, you should by default be able to get a good chunk of traffic from the long tail keywords. Just make sure each separate product page has a unique set of meta tags (description and keywords) that relate to that product.
You need not to for go for SEO of sub domain. Simply do the SEO on main domain and then promote your website through internet marketing techniques like SMO SEM etc...
This isn't really a question that can be answered. If you does no marketing and no seo you can probably expect 0 visits. This may increase over time as people find the website and it is indexed by search engines.
Now a days SEO is required for any site, no site can rise without SEO strategy. So that if any one fell that site is not working and no many visitors so SEO is must required.