Pitting is okay
Pitting on a plane sole is usually okay, as long as it’s not really close to the mouth. You don’t want anything to interfere with the shaving ejection. But if you’re using a #5 jack plane for scrubbing (rough removal) it won’t matter at all. Pitting on the iron or on chisels is what will cause problems. But you can purchase replacement plane irons. But pass on pitted chisels. Pitting is unsightly, which puts a lot of people off, but it can offer a great price. Just don’t pay much for it. People will start to think that pitted tools are more valuable than they really are…let’s keep prices low!