estimate drift (advice appreciated)

Without going into way too many details, we are working with a vendor is generally great, trustworthy, etc. But, and this is a big but, now a businessman. He’s consistently been off on quotes and often comes back with prices about 30% higher than estimate.

I think we are still getting great value but its making us not want to work with this vendor.

How much drift/overage is acceptable?

Thanks,
FF

By frostfree |