There are multiple sources of divergent positions that can arise in situations where money is exchange for goods and services. There are 2 different types of sources. Those that arise from the content or subject matter of the negotiation (what is being negotiated) and those that arise from the process of negotiation (how it is being negotiated).
Sources of divergent positions - the process of negotiation:
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Line of best fits is the line that goes approximately through the middle of the data points with an equal number of data points above and below it. Line of best fits is a method of calculating medium value instatistics.
Standard terms and conditions are basic terms and conditions of business governing transactions that do not have a definitive contract, usually designed to be included in form documents such as orders. While there may be conflicts regarding standard terms and conditions, they are about the content of negotiation, not the process.
Type of purchase: when buying organisation makes an decision to purchase an item, a buyer is faced with three possible scenarios. The item to be bought could be a straight re-buy, a modified re-buy or a new purchase. Decision on type of purchase is purely an internal decision.

Explanation
A key consideration when seeking to negotiate prices is to establish what proportion of the spend is addressable by procurement action such as negotiation. Addressability of spend is influenceable through negotiations or application of other saving effort or leverage with suppliers.
LO 2, AC 2.1

Explanation
In the scenario, the value of contract as well as the importance of purchased item justify the procurement's travel. Visiting a supplier at their HQ or operational facility may facilitate the procurement team in assessing, albeit briefly, the culture of the organisation, how busy they seem and how staff engage with each other. A visit is a good opportunity to assess supplier's capacity.
LO 2, AC 2.2

Direct costs are those costs of a product/service directly attributable/traceable to its production, for example, the costs of labour and materials directly used to produce the goods/services which the organisation sells.

To answer this question, you should know The seller's perspective as in 'How to Negotiate Professionally':
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In the scenario, the buyer's spend is low, while they seem unattractive to seller (as they tend to pay late). So the buyer is classified as Nuisance in seller's perspective.