My 2000 Boyer has Kevlar hulls and aluminum cross beams. It's only a few pounds over minimum weight.
The Flyer II from Ashby that I sell here in the States can be built with options considerably less expensive than than the full-on version (that was) advertised on my website. He can build them with alum X bars, boom etc, use fiberglass in the hulls instead of Kevlar and Carbon. The weight will be class minimum and the price, last I checked, was around $4000 less than the Ashby full Kevlar special that I have sold here in the US. It seemed to me that people spending that kind of money on an A-class didn't want to cut the cost by several $1000 dollars and have alum bits and fiberglass in their hulls, so I imported the best of the best as far as options. But... at least for the Flyer II (and I assume for most other A-class) it can be built competitively for considerably less $$$, I just didn't see the market for it here. Is there one?
These details may be slightly different now, as the the last time I checked was a few years ago.