I’m sure this expression is far simpler.
"I would advise you against selling your share of the company. The deal might seem appealing now, but with the new range of products starting to sell well the profits are soon to start rolling in. If Matthews gets his hands on your shares, he’ll be laughing all the way to the bank."
I think ‘laughing all the way to the bank’ is an expression for unexpected, sudden wealth. The kind of thing that would get you chuckling down the street as you went to pay the cheque in.
- Garzo, who sobs all the way home :’(