and to add to my previous statement...
It depends, in China the price of various tea may greatly differ from each other.Even in the same piece,their prices may be different extremely,such as 信陽毛尖茶(Xinyang maoojian tea,abbreviated to XM tea).XM tea with super quality is 5600 yuan(approximate 1000 dollar)per kg.However,XM tea with worst quality is 900 yuan(approximate 130 dollar)per kg,so it is hard to say the interval of price of tea.
Beign that there's such a big range in tea pricing, you'll find this interesting:
Believe it or not, almost all Chinese teas are made from one plant species, known as Camellia sinensis. It
is an evergreen shrub that can grow into a small tree and is native to Southeast China. The plants can
live for up to 100 years and the leaves are harvested year round. (The other plant from which tea is
made is Camellia assamica from India and most tea in the world comes from these two sub-species of
the Camellia plant)
I rarely delve into the economics of tea (thanks to a mysterious number-induced nausea), but I couldn't resist after finding a recent paper by Nancy Qian, a professor of economics at Brown University, entitled "Missing Women and the Price of Tea in China: The Effect of Sex-Specific Earnings on Sex Imbalance."
There has been an ongoing debate (see this 2005 article and a more recent rebuttal) since the coining of the term "missing women," which refers to a significantly male-skewed sex ratio through selective abortion and abandonment of females, especially in places like China, India and Sri Lanka where the cultural preference is for male children.
Many Asian populations are characterized by severe male-biased sex imbalances. For example, whereas 50.1% of the current populations in western European countries are female, only 48.4% are female in India and China. (Qian)
That discrepancy may not seem large, but consider the size of these populations: It translates into 44 million missing women in China in 1990, when the data were first published.
Qian makes the case that economics can directly affect this imbalance, however, and through a surprising source: tea. China is the world's largest producer of tea, churning out 835 metric tons in 2004.
Because of the low height of tea bushes there (about 2 1/2 feet), Chinese women have a distinct, natural advantage over the usually taller men in harvesting the delicate leaves.
If the price of tea rises, then, women's value economically stands to as well. And as tea is such a massive crop in China, this could start to equalize the country's male-skewed sex ratio.
Regarding relative survival rates for girls, increasing the price of tea can operate through [several] channels. First, it can increase the relative desirability of having a girl by increasing parents’ perceptions of daughters’ future earnings relative to that of sons. Second, the increase in total household income can increase the relative desirability of girls if for some reason daughters are luxury goods relative to sons. (Qian)
Paying more for your morning cup of tea, therefore, could be affecting far more than your wallet, if it does mean an increased economic value for women. According to Qian's research, an increase in tea's value boosts female survival rates as well as educational attainment in China.
Backing up my comments I offer this data.
品 名
等 级
批发价(元/斤)
精品信阳毛尖
明前贡品特级
2600
明前一级
1580
高档信阳毛尖
雨前特级
1260
雨前一级
980
雨前二级
880
中档信阳毛尖
一级
680
二级
560
三级
450
"Label","US cents per Kilogram"
Jan 2007 249.70 -
Feb 2007 212.50 -14.90 %
Mar 2007 203.27 -4.34 %
Apr 2007 192.05 -5.52 %
May 2007 190.04 -1.05 %
Jun 2007 202.05 6.32 %
Jul 2007 211.91 4.88 %
Aug 2007 210.39 -0.72 %
Sep 2007 231.25 9.91 %
Oct 2007 224.30 -3.01 %
Nov 2007 209.64 -6.54 %
Dec 2007 206.05 -1.71 %
Jan 2008 229.70 11.48 %
Feb 2008 264.67 15.22 %
Mar 2008 246.29 -6.94 %
Apr 2008 260.91 5.94 %
May 2008 265.14 1.62 %
Jun 2008 284.52 7.31 %
Jul 2008 287.48 1.04 %
Aug 2008 321.90 11.97 %
Sep 2008 321.59 -0.10 %
Oct 2008 282.39 -12.19 %
Nov 2008 241.00 -14.66 %
Dec 2008 228.48 -5.20 %
Jan 2009 261.59 14.49 %
Feb 2009 270.00 3.21 %
Mar 2009 262.86 -2.64 %
Apr 2009 277.41 5.54 %
May 2009 288.00 3.82 %
Jun 2009 287.14 -0.30 %
Jul 2009 337.65 17.59 %
Aug 2009 328.38 -2.75 %
Sep 2009 374.41 14.02 %
Oct 2009 344.77 -7.92 %
Nov 2009 361.05 4.72 %
Dec 2009 374.22 3.65 %
Jan 2010 338.67 -9.50 %
Feb 2010 332.35 -1.87 %
Mar 2010 332.61 0.08 %
Apr 2010 313.59 -5.72 %
May 2010 286.14 -8.75 %
Jun 2010 262.36 -8.31 %
Jul 2010 259.18 -1.21 %
Aug 2010 315.09 21.57 %
Sep 2010 337.18 7.01 %
Oct 2010 339.86 0.79 %
Nov 2010 331.68 -2.41 %
Dec 2010 352.13 6.17 %
Jan 2011 368.10 4.54 %
Feb 2011 349.75 -4.99 %
Mar 2011 330.65 -5.46 %
Apr 2011 325.33 -1.61 %
May 2011 327.68 0.72 %
Jun 2011 334.05 1.94 %
Jul 2011 356.14 6.61 %
Aug 2011 358.17 0.57 %
Sep 2011 362.27 1.14 %
Oct 2011 357.14 -1.42 %
Nov 2011 351.27 -1.64 %
Dec 2011 333.36 -5.10 %
It's pretty obvious if you really think about it.