Add slick looking Amazon Search widgets to your blog posts in a brain-dead simple way! 
Just say <code>[search]</code> to add a Search widget anywhere on your blog.
Amazon Widgets are small Flash-based mini-applications that bring Amazon’s rich features right to your website. The Amazon Search widget is a really useful widget that lets your users search from Amazon products right from your blog. You can even earn money by specifying your Amazon Associates ID.
There are many ways to create a Search widget. Here are some:
<ol>
<li>
<code>[search]</code> 
This creates a 160px widget widget with 1 column and 5 rows.
</li>
<li>
<code>[search keywords="Nikon DSLR" category="Photo"]</code> 
This search widget lets you search through Amazon’s ‘Camera & Photography’ catalog with results for “Nikon DSLR” displayed by default.
</li>
<li>
<code>[search width="500" columns="2" rows="3"]</code> 
This creates a 500 pixel wide widget with results spanning 2 columns and 3 rows.
</li>
<li>
<code>[search design="1" color_theme="Pink"]</code> 
This creates a pink themed widget. Make sure to choose a design and color theme that makes the widget blend in with the rest of your page design. 
You can select from a range of designs and color themes. These are valid design/color_theme combinations: 
Design: ColorTheme 
1: Blues, Pistachio, RedGrey, Pink, Pumpkin 
2:Default, Blue, Grey, Orange, Pink, White 
3:Cinnamon, Peppermint, Spearmint 
4:Onyx, Cobalt, Ruby 
5:BrushedSteel, BrushedNickel, BrushedCopper 
</li>
<li>
<code>[search show_rating="False" show_price="False"]</code> 
This creates a search widget where the star ratings and price for each product are hidden. So you only see the Product title and sub-title for each result.
</li>
<li>
<code>[Search tag="ohmyki-20" show_price="false" show_rating="false" keywords="HDTV"]</code> 
This creates a Search widget results for the keyword “HDTV”. The search results will not have price or ratings information since we’ve set those to “False”. Also, since the ‘tag’ parameter is specified, you will earn an Affiliate referral fee for any sales made through this widget. IMPORTANT: One in 5 impressions of this widget will be tagged with the plugin creator’s affiliate ID (‘wp-search-20’).
</li>
</ol>
You can customize a lot more in your Search widget widget. Check out the FAQ section for more details.

WP-Amazon-Search widget

Add slick looking Amazon Search widgets to your blog posts in a brain-dead simple way! Just say [search] to add a Search widget anywhere on your blog.

Lora77

With WpZon you are able to add Amazon products into your posts or pages.
Features:
<ul>
<li>Supports US, United Kingdon, Canada, Germany, France, Italy, Spain Amazon affiliates</li>
<li>Show products by Asin, keywords, category and/or subcategory</li>
<li>Sort items by bestselling, price, reviews etc.</li>
<li>Set the number of products you wish to display </li>
<li>Choose between 1, 2 or 3 column mode</li>
</ul>
The plugin uses a shortcode that you can easily insert into your posts wherever you would like to. 
A sample shortcode for displaying 10 pressure cookers, sorted by reviews would look like:
[wpzon keywords=”pressure cooker” sindex=”Kitchen” sort=”salesrank” listing=”10″ country=”com” ]
A sample shortcode for displaying 2 specific products based by their Asin number will look like:
**[wpzon spec=”1″ asin=”B00006ISG6,B0000717AU” listing=”2″] **
<h3>Video</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/7g0_w2QJ1-8?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>`

WpZon – Amazon Affiliate Plugin

Very good plugin I am using it on Link redacted.  Please do not add links to reviews.

Very good plugin

Add Amazon product listings to your posts or pages. Get items by Asin, keywords, category and browsenode. You can choose from 3 display modes.

WP-Amazon-Search widget vs WpZon – Amazon Affiliate Plugin