So, DH and I have been invited to an evening wedding, along with a poem about how the couple really only want us at their wedding, but if we would like to contribute towards their honeymoon, then they would appreciate it, blah, blah.
Firstly, the couple aren't having a honeymoon. I know this becuase I asked the bride where they were going, and she told me no where- they went on a family holiday a couple of weeks ago (Even the maid of honour was 
about this and sent me a 
text of her invitation poem).
Secondly, bride used to me my boss. When she was, she drove into DHs car, scuffing the bumper. She absolutely refused to engage with insurers (she's a very head in the sand person, who thinks if she ignores something it will go away) and therefore it was never sorted. DH is about to sell the car, so is having the scrape/scuff repaired.
Thirdly, the bride cancelled part of her hen-do 1.5 hours before we were due to meet. It was to be a meal & night out on the town, followed buy a spa weekend. Not everybody could make the spa weekend (cost/child care), including myself. I, DH and DC had come home from our holiday much earlier in the day than we otherwise would so I could get ready to go out, so as you can imagine was disappointed to get home to find it was cancelled. The reason being the bride had fallen out with one of the bridesmaids.
Wedding is next week and DH doesn't want to be particularly generous with the cash gift because of points 2 & 3. He doesn't actually care what they spend the cash on.
How much cash is standard to give as a wedding gift anyway? Is DH being unreasonable?