Well Spindrift, I don't think Bonnie & Clyde are holding a gun, and forcing you to buy them. You definintely have an option. All the discs are available to purchase separately in the UK, if you're interested.
Actually they will be released individually in the U.S. at a later date.....or so I read at another source.
When I initially posted that, I thought this was the only way to get the first two on bluray and although in the end, it's a matter of taste, I just cannot understand anyone who says the 3rd and 4th by Schumacher were any good at all. I just do not get it.