Barry Hughes

This plugin works with and depends upon the Shopp e-commerce plugin for WordPress. It is designed to integrate with the 1.2.x branch of Shopp and has been successfully tested with Shopp 1.2.1.
Enough of that, what does it do?
<ul>
<li>Shopp already ships with a widget that can be used to display product categories. This is an alternative to that widget.</li>
<li>Select only those categories that you wish to include, ignore the rest.</li>
<li>Easy to use: simply check the boxes for the relevant categories, choose the display mode (dropdown, regular list etc) and you’re done.</li>
<li>A convenient way to build category-based store menus in the sidebar!</li>
</ul>
This plugin was written by <a href="http://freshlybakedwebsites.net" rel="nofollow ugc">Barry Hughes</a> and can be supported by <a href="http://freshlybakedwebsites.net/say-thanks-with-a-beer/" rel="nofollow ugc">buying the author a beer</a>.

Shopp Custom Categories Widget

Provides an alternative category widget featuring fine grained control for use with the Shopp plugin.

tysonlt

This is a BETA release of the Shopp Wholesale system.
Shopp Wholesale is a comprehensive wholesale management system for Shopp. It allows the administrator 
to enable wholesale prices for individual items and variations, and updates all prices to wholesale 
prices when a wholesale customer is logged in.
Currently this plugin is in BETA. All of the functionality is stable, but product add-ons are not currently supported. Attempts to apply wholesale pricing to add-ons will product incorrect prices.

Shopp Wholesale

Comprehensive Wholesale System for Shopp (BETA RELEASE).

Shopp Custom Categories Widget vs Shopp Wholesale