The MIT chaps' blueprints have been shared with the whole world of musicians and electronics hobbyists. They are open source, they are intellectually Free. In fact, there are a number of people who assemble and sell x0xb0xes. Some of these people are responsible and dependable, a few are not, and many are honest people who lack experience. The reasons that we think make x0x Source the biggest and most trusted supplier of fully assembled, tested, and warrantied x0xb0xes are:

• Experience and quality -- We've already assembled and shipped dozens of x0xen. We use computer-aided testing and calibration, together with careful A/B listening tests to guarantee each x0x.
• Solid return policy and warranty -- Full refund within 30 days. Comprehensive warranty on parts, labor, and two-way shipping for three years.
• Honesty and communication -- All questions answered in one day. If there is ever a problem or delay, we bite the bullet and tell the truth.
• Fast delivery -- Next-day shipping via EMS. Delivery to most European countries takes one week (including customs).
• Reputation -- Being an Ebay member, which is how we started out, creates a record of feedback and reviews from Ebay buyers. The fraction that gave us the thumbs up is 100%. We really can't say much more than our customers. Their cumulative rating of our x0xes (known as "Item as described") is 5.0 out of 5.0.