for sell: 为销售
But I'm so sorry that is not for sell.
但是非常抱歉,它是非卖品。
for sale:
出售待售
The house is up for sale.
这所房子正待出售。
It was a 50/50 split. We're putting the house up for sale next week.
我们各分50%。下星期我们就要把房子卖了。
They've put their house up for sale.
他们的房子现在出售。
There are many boats, new and used, for sale.
有许多新船和旧船出售。