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We're behind schedule, so we need to make up for it.
Could I check what these numbers are based on?
If I may be so bold, let me make a suggestion.
I doubt that proposal will get approved.
Let's play it by ear on that.
We may have underestimated this.
This is just to be safe, so please don't take it the wrong way.
Honestly, I don't feel the price is justified.
I can't go along with that offer.
In exchange for accepting this, I'd like more time.
That figure is hard given our budget.
Let's have the meeting online.