Of course there are plenty of silly coincidences and many laugh out loud moments:
And Denry still lived in insignificant Brougham Street, and his mother was still a sempstress! These were apparently insurmountable truths. All the men whom he knew to be members were somehow more dashing than Denry--and it was a question of dash; few things are more mysterious than dash. Denry was unique, knew himself to be unique; he had danced with a countess, and yet... these other fellows!... Yes, there are puzzles, baffling puzzles, in the social career.
"That makes over three pounds! Well, I'm dashed!"
At the hour appointed for dinner he went to St Asaph's Road, but could eat nothing. He could only keep repeating very softly to himself, "Well, I'm dashed!"
The ending wasn't bad at all and in a nutshell you might as well read it.
audiobook at http://librivox.org/the-card-by-arnold-bennett/