How to add site search to an eCommerce website

According to many experts, a website search function is important for all the following reasons: 

Improved sales. Effective site search means better usability, so customers can find things more quickly. This can translate into higher sales, as customers who find what they are looking for easily are more likely to make a purchase, while site search also offers opportunities for merchandising. 


Higher conversion rates. More intuitive search and navigation means higher conversion rates.

Increased site usage. A better user experience means that customers are more likely to spend more time on the site, and can boost the number of registrations and return visits.

Improved customer retention and loyalty
. More loyalty as customers know they can find products more easily. 


Improved branding
. Improving user experience means more customer satisfaction, and a better customer journey compared to competitor websites.
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Google offers a custom search engine for your site, for a price. It starts at $100 for 20,000 searches a year, if memory serves correct. 

Does anyone know of a free option for eCommerce entrepreneurs? Please share your thoughts in the comments section. 

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