I am often amazed at the thinking that swords cost so much. Many that frequent these forums spend way more, per inch, on knives.
As true with many items, you generally get what you pay for. There is a range of price for any given production item, suggested retail to discount. Some vendors may be at the higher end of the scale and offer better customer service.
I think we have been seeing an increase in prices amongst production makers, mostly due to their costs. Just about anything costs more than it did ten years ago.
Some production swords that shouldn't be very flexible, unfortunately are. Stiff does not need to mean weak and flexible doesn't need to mean wimpy. There are too many variables to lump all swords into a "this is the way they should be" description.
Yes, a machete or bolo is a cheap alternative for a cutting device. They are certainly historical devices but only remotely approach the characteristics of the western (European) type swords. Cold Steel gets mixed reviews on their offerings and you must remember that they are primarily middle manning the stuff. For twice the price, you can get twice the sword. For the same money, or less, there are comparable alternatives.
Good luck with your quest for a sword that meets your needs/interest. The only problem with buying one is that you'll certainly buy another
Cheers
GC