Ambrose of Milan

For he did not seek a price from us, who paid the price of his own blood for us; for he redeemed us not with gold and silver, but with precious blood. Therefore, you must pay the price for what you have bought; and even if he does not always demand it, you still must. Therefore, buy Christ for yourself not because few have him, but because everyone has him. Everyone has him by nature, few offer themselves out of fear. What Christ requires from you is what is rightfully his. …

On Joseph the Patriarch, 7.42 ↗

Bede

Knowing that you were not redeemed with corruptible things, with gold or silver, etc. The greater the price by which you were redeemed from the corruption of carnal life, the more you ought to fear, lest perhaps by returning to the corruption of vices you offend the spirit of your Redeemer.

Commentary on the Catholic Epistles ↗

Bonaventure

This is the price of which the Apostle says: "You have been bought with a great price; bear and glorify God in your body." That the price is great, the Apostle Peter says: "You were redeemed not with corruptible gold or silver from your vain manner of life received by tradition from your fathers, but with the precious blood as of a Lamb unspotted and undefiled." This had to be a great price, by which the whole world and the entire human race was to be redeemed; because man could not make satisfaction, since no single man could be …

Collationes de Septem Donis, Collation 6 ↗