I had a few items to be moved from my daughter's condo to my house, plus a used stove to be moved to my brother-in-law's condo. They provided a quote of $675 + GST, but the final invoice was $1016 + GST, a whopping 50% over the estimate, with no changes in contents, date/time, location.
If I had been given an accurate estimate I would not even have bothered with the move - the moving cost would have been higher than the values of the items.