Me alloy enkeis have a lot of the same finish blemishes/pitting/whatever. I don't believe (someone correct me if I am wrong) it will affect the wheel's performance. You can always have them blasted and powdercoated (or just use the old favorite wheel paint) if it bothers you that much. I believe filler can be applied just like body work if you want them perfect.
Also, I believe those are forged wheels, they tend to be more expensive than standard cast alloys. I'm pretty sure that's a relatively standard price for old forged alloy LC wheels (but again, someone correct me if I'm wrong).