Hi,
that very much depends on what you are after. I tend to buy secondhand, that way I can get C5 and C3 grade ballscrews for a small fraction of new price, but even then
they are still a lot more expensive than Chinese made C7's. For quality secondhand parts I have made multiple purchases from:
https://www.ebay.com/str/industrialp....m47492.l74602
Craig