The Commentary is comprised of 42 individual volumes and all together are available in electronic format for $199. But not everyone is interested in every book of the Bible so after having received a number of requests for individual volumes in the series I’ve decided to offer any single volume for $5.
If you bought each volume individually it would cost $210 for the entire series in electronic form at $5 each, so it still makes sense to buy the whole.
But I’m happy to send each volume individually for those who prefer it. Just paypal me $5 and tell me which you wish. If you want two or three simply multiply each volume by $5.
And please remember, volumes are for your personal use only. Distributing them to others is copyright infringement and quite frankly, theft.