With Spidergap, the price you pay is based on the number of people assessed.
The cost starts at $89 per person assessed but decreases if you buy 25 or more (and decreases further for 50 or more, 75 or more, etc). We have a pricing calculator on our Pricing page:
Our pricing for UK customers will be in Pounds Sterling, and for customers in Europe our pricing is in Euros. Pricing for all other customers is in US Dollars.
You get your first credit free when you sign up, so you can try it out: https://www.spidergap.com/signup