Is registration required to make a purchase?
Yes, registration is required to make purchases on fluid-hub. You can freely browse the product catalogue and view some technical information without registering, but to view prices and shipping times, add products to the cart and complete an order you need to be registered and have an active account.
If you are not yet registered, find out how to do it and fill in the registration form. If, however, you are already registered but cannot see the prices, read Why do I see the "Sign in or register" button instead of the price?