As father of bride had first name Patient, might the Abbot family have been Non-conformist? That may have been a reason for marrying by licence instead of banns. If they didn't attend the Anglican church they may not have wanted banns, which were usually read out at Sunday services. One of my Catholic lines, yeoman farmers, innkeepers or business owners, generally married by licence around this time as they didn't attend the parish church on Sundays. Some of their Catholic friends & neighbours also married by licence. My Catholic lines in an adjacent parish, ag. labs., married by banns as they wouldn't have had a few shillings spare for a marriage licence.
That's a lot of money in 1772. I thought it was a transcribe error,
The sum of £200 was payable only if it turned out that what they'd sworn to was false. The bondsman was
the guarantor for the £200, like someone who stands bail for an accused person. The £200 may not even have existed. All being well, the only money which the bridegroom had to pay was the cost of the licence, a few shillings.
There are examples of marriage licences online with explanations. They may include typical fees for licences.