Contact Page We are available via E-mail at any time. Drop us a message and we will reply within 24 hours. Engineering and product information- David Yates Sales and Marketing, product information- Gary Bennett Please e-mail info@tpiastro.com for information and pricing TPI products can be obtained direct or at the following retailers. Efston Science, Toronto escience.ca KWtelescope, Kitchener kwtelescope.com