Explain financial tools that a buyer could use to support a negotiation?

There are many financial tools which may be applied in different situations of negotiations:

Undertake risk assessment to prepare for negotiations

SWOT analysis for a negotiation

Evaluate and analyse supplier tenders

Identify and calculate elements of fixed and variable costs to prepare for a negotiation

Different perspectives on fixed and variable costs

Break-Even analysis using marginal costing

LME Live, Baltic Index, ICIS, Forex, Rare Earth Forex, etc