The supply curve slopes upward

For background, Cyprus allows commercialization of the practice and many European nations do not:

According to a 2010 study by the European Society of Human Reproduction and Embryology, nearly 25,000 egg donations are performed in Europe for fertility tourists every year. More than 50% of those surveyed traveled abroad in order to circumvent legal regulations at home. The Cypriot government estimates that, each year, 1 in 50 women on the island between the ages of 18 and 30 sells her eggs. One NGO analyst says that among the island's Eastern European immigrants, the rate may reach 1 in 4, and some women give up their eggs several times in a year. By comparison, only 1 of every 14,000 eligible American women donates.

Here is the full story, the article is interesting throughout.  Can you guess which women face the highest demand for their eggs?  I thank Alex Mann for the pointer.