I have the following DH flybarless blades for sale.
Brand new in box DH 611 flybarless £55.00 inc postage
Under 20 flight old superb condition DH 691 flybarless blades £65.00 inc postage
There is not a lot of info about these blades. They are from the same factory as Radix, Edge etc. Designed and test flown to production by 3D Masters World Champion Dominik Haegele.
I like them a lot and still fly the 711 version and they track, fly and auto really really well. Just the above sizes are no longer required due to selling off a few models.
Have a look at Kings Lynn models and Area51 who retail these.