I have purchased several Offlajn.com products and I have not been disappointed with the quality and ease of use of their products. The Universal AJAX Live Search is a great plugin for any website but especially for those that use VirtueMart and want a quick and professional manner to directly display your products below the search bar and instantly click on that item.
The level of support for Offlajn is outstanding! I had a few minor issues with things not displaying correctly in IE 9 and they fixed them for me at no charge. I highly recommend their products to anyone looking for quality Joomla extensions at a very fair price with rock solid support behind what they sell.