小智代写一篇500字的原创论文的价格因不同的机构而异。价格通常基于以下几个因素：学术级别、紧急程度、主题复杂性和所需研究工作量等。然而，一篇高质量、原创的论文往往需要耗费大量时间和精力，因此价格可能会相对较高。

在一般情况下，代写一篇500字的论文可能会在50至200美元之间，当然也可能更高或更低。这仅仅是一个大致的范围。建议您在选择代写机构时进行调查，并与他们直接联系以获取确切的报价。

Translation:

The cost of writing an original 500-word paper varies depending on different institutions. The price is usually based on several factors, including academic level, urgency, complexity of the topic, and required amount of research. However, a high-quality and original paper often requires a significant amount of time and effort, which may result in a relatively higher price.

In general, the cost of writing a 500-word paper could range from $50 to $200 or even higher or lower. This is just a rough estimate. It is recommended that you conduct research when choosing a writing service and directly contact them to obtain an accurate quotation.