Uhhh, which is it? The official PR from SPWR I saw late last night had them priced much higher:
"The debentures will pay interest semi-annually on June 1 and December 1 of each year, beginning on December 1, 2013, at a rate of 0.75% per annum, and will mature on June 1, 2018. The debentures will be convertible into shares of SunPower's common stock at any time based on an initial conversion rate of 40.0871 shares of common stock per $1,000 principal amount of debentures (which is equivalent to an initial conversion price of approximately $24.95 per share of SunPower's common stock), representing a conversion premium of approximately 30% over the closing sale price of $19.19 per share of SunPower's common stock on the NASDAQ Global Select Market on May 22, 2013. The conversion rate (and the conversion price) will be subject to adjustment in certain circumstances."