Ganxy already lets authors and publishers create ebook “showcases” that can be tweeted and embedded on sites like Facebook, or can stand alone as websites. With the new bundling feature, authors and publishers can create “box sets” of ebooks and sell the bundles directly to their audience through the showcase. They can also quickly adjust pricing and offer flash sales.

Ganxy’s showcases for single titles let users either sell ebooks directly through the showcase or link through to retailers. But the bundling option is only for users who want to sell directly through Ganxy. The company’s fee is 10 percent of all the sales made directly through its platform.

Some of Ganxy’s current users include Diversion Books (publisher of Dallas Mavericks owner Mark Cuban and the Washington Post ebooks, among others), romance authors Barbara Freethy and Sylvia Day, and New York Times columnist Mark Oppenheimer. The company is self-funded.

Separately, StoryBundle, the startup founded by former Gizmodo and Lifehacker editor Jason Chen, announced its new “Holiday Gift Bundle.” StoryBundle packages together a group of ebooks by self-published authors and lets users pay what they want. The holiday bundle includes six ebooks in a variety of genres; users who pay at least $8 get two bonus ebooks. The company also added gift cards.

New York-based startup Ganxy provides an easy solution. The company, which was founded in 2009 and is officially launching today at the Frankfurt Book Fair, gives authors and publishers a straightforward toolset to let them sell books and control marketing and promotions. In just a few minutes, anyone can create a “showcase” for a book that includes its cover, description, video and other marketing materials, and purchase options. Authors and publishers can sell books directly through the showcase or simply provide links to retailers. The entire showcase can then be tweeted, embedded in a blog, website or Facebook page, or can just stand alone as a website.

Ganxy also allows authors and publishers to track where their sales are coming from. “People have had no idea what’s working,” cofounder and biz dev lead Joshua Cohen told me. With Ganxy, they know if a book was purchased by someone who clicked on their showcase from Facebook, for example, versus from a tweet. Users can also add an email capture field to a showcase, allowing them to connect directly with readers who are interested in their books.

It’s free to create a showcase, but Ganxy makes money in two ways. The company takes 10 percent of each sale when an ebook is sold through a showcase (authors and publishers can choose whether they want to sell ebooks directly). Ganxy also makes money through the affiliate links to retail sites that are embedded in the showcase. An author can also request to use his or her own affiliate links in the showcase; in that case, Ganxy displays its affiliate link 25 percent of the time and the author’s 75 percent of the time.

Ganxy also wants to appeal to readers. When someone buys an ebook directly through a Ganxy showcase, it’s added to his or her library and can be downloaded in any format (EPUB, iOS, Kindle and so on). All the ebooks Ganxy sells directly are DRM-free. (Publishers who don’t like that can just display retail links and not sell ebooks directly.)

So far, a few clients are using Ganxy in beta: Diversion Books (the publisher of Dallas Mavericks owner Mark Cuban and the Washington Post ebooks, among others), romance author Barbara Freethy (who’s achieved huge success self-publishing her out-of-print titles as ebooks) and author and Cracked columnist Robert Brockway. The site is now opening to everyone and will accept new users in waves.

Ganxy is entirely self-funded. The company’s president is Aleks Jakulin, who previously taught data mining at Columbia and is an expert in artificial intelligence. (The European Coordinating Committee for Artificial Intelligence named his PhD research the best artificial intelligence dissertation in Europe in 2005.) Cofounder Cohen previously cofounded the German video identification company iPharro Media and worked at Merrill Lynch, Random House and MTV.

I asked Cohen if and when the company plans to expand Ganxy to include other forms of digital content. For now, he said, the primary focus is books, with the direct sales functionality focused heavily on ebooks. (In an earlier version, Ganxy focused on direct music sales, and those are still available.) But as a promotional tool, Cohen says, Ganxy’s showcases could be used for any type of digital content.

Last year I wrote about Freethy’s strategy of selling her out-of-print titles as inexpensive e-books in order to draw attention to her new titles published by Simon & Schuster (NYSE: CBS). She created recognizable covers for her brand and ran Twitter and Facebook campaigns designed to drive the books up the Amazon (NSDQ: AMZN) and Nook bestseller lists.

These strategies worked. Freethy’s The Sweetest Thing, which costs $2.99 and was originally published by Avon in 1999, is now #35 on the New York Times (NYSE: NYT) combined print + e-book bestseller list and #22 on the e-book-only list.

The 1.6 million self-published e-books Freethy has sold is across 18 titles — 17 backlist and one new e-book original, A Secret Wish, which she told me has sold 73,616 copies in three months. Freethy’s titles are available in several e-bookstores but she said she sells the most titles through Amazon and Barnes & Noble.

Now Freethy is creating her own foreign-language editions. “I’ve translated three titles into foreign languages,” she told me. “Don’t Say A Word has a German edition (Sag kein Wort), Daniel’s Gift has a Spanish edition (El Regalo de Daniel) and Just The Way You Are has a French edition (Exactement Comme Tu Es). They are for sale at Amazon, Barnes & Noble (NYSE: BKS) and *Apple*.

“I hired a translator and a separate proofer to proof the translation for each book. In some instances I used a second proofer as well to make sure the translation was as accurate as it could possibly be. I went through Elance.com for a couple of the translators and another was referred by an author to me. It’s a complicated process, but I do believe the global market is going to grow and I would love to make my stories available around the world in as many languages as possible.”

For some titles, she is selling foreign rights to international publishers. “I recently sold seven titles to a Brazilian publisher, Novo Conceito Editora, for translation into Portuguese and print/ebook publication in Brazil,” she said.