DVD player makers from China are suing the 3C DVD Patent Group over royalties on patents held by the consortium. The suit accuses 3C alliance for price-fixing, unlawful tying of essential and non-essential patents together, group boycott and conspiracy to monopolize. According to the Chinese companies, typically U.S. patent licensing fees for other products are between 3 and 5 percent of the item's wholesale price, compared to the 50 percent for DVD players
See the comments. Apparently the wholesale manufacturer has to pay a flat $20 per unit in patent fees, which is approaching (or at) 50% of the wholesale cost of the player, whereas in most tech patents the patent fees are a percentage of the wholesale cost.