At farmgate, the UofIll site, comes a paper on the pricing of seed corn--an excerpt:
"The WI trio examined seed corn pricing in Illinois in 2004 to illustrate how stacked traits were actually priced:At Grist, Tom Philpott pushes an interview with an author:
• Conventional seed corn averaged $88.33 per bag.
• The Bt corn borer trait added $20.49
• The Bt rootworm trait was alone worth $27.28.
• One herbicide tolerant trait was priced at $14.51, another at $6.83.
• Double stacking of corn borer and rootworm traits added $35.51.
• Triple stacking of corn borer, rootworm, and herbicide tolerance added $37.30.
• Quadruple stacking added $39.45 for corn borer, rootworm and both herbicide tolerant traits.
• The market power of the seed company added over 8% to the price."
"...the relationship between organisms and individual genes is much more complex and mysterious than researchers originally thought. And that, Kimbrell says in this interview, helps explain why after 25 years of R&D, the GMO industry has only managed to create a couple of viable traits. The main one, of course, is "herbicide tolerance," e.g., Monsanto's Round Up Ready corn and soy, engineered to withstand copious lashings of its flagship herbicide, Round Up."