Earlier quoted context omitted.
That seems a bit low, for a well-funded company. $1 million per employee is more like the going rate. See for example: http://www.quora.com/What-is-a-typical-deal-structure-of-an-...
You assume those deals scale down. Just because a company will pay $50 million for 50 engineers doesn't mean it's going to pay $1 million for 1 engineer. 50 engineers is magnitudes more valuable than 1 engineer.
Instagram had 13 employees and was acquired for $1BN. Ptch had 3 employees and was purchased for $6.5M. In those cases the technology and product took up most of that value. If the acquirer is actually going to use your technology, that will obviously be a large factor in determining the sale price.