Bulk Bricks

Based on my research, I was unable to find specific information about the LEGO Bulk Bricks theme's history or investment performance. The search results primarily returned general LEGO investment guidance and theme overviews, but no specific details about the Bulk Bricks theme itself. The search results indicate that databases like BrickEconomy and Brickset track this theme, but the specific content wasn't accessible through the search results. Given the lack of specific research findings about this theme's investment characteristics, appeal to collectors, or market performance, I cannot provide an accurate editorial description based on factual research as requested. The available database information shows it was a small theme with basic brick sets, but without concrete research findings about what makes it special for collectors or its investment trajectory, I cannot fulfill the specific editorial requirements.