gnilliwdog, are you slow...?
And seriously, if you value a woman's right to choose over an unborn child under any circumstance, you should value her right to birth the child and give it to people who want it, if she genuinely chooses that, or sell it if she chooses that because her wants come first.
Anyway, if you believe the rights of a woman are always more important than that of a foetus you should be fine with a woman conceiving a foetus for sale or donation, because she wants to and that comes first.
Er, no, because in this case the unborn child was created as a result of the surrogacy. No surrogacy = no child, and no rights to worry about at all.
How can you not see that this situation is different?