Here are audio files of me, Grant, teaching Lessons 1, 2 and 3 in my Calculus for Management
book.
You can buy the complete set of my audio lectures teaching both volumes of my book for $50 + GST. That's less than $1 per hour!
If you are interested, reply to this email, and I will send you a PayPal invoice. You can pay with your PayPal account or with a credit card if you do not use PayPal. Once the invoice is paid, the audio will be delivered straight to your inbox within 24 hours.