Bikewer, I think you are reffering to Chracter Bows. This bow has some character, but by far the most challenging characteristic was making a self from a tension weak wood.
I haven't made a bow from Mulberry, but if you plan on making a Sass bow, either make it really long or keep it moderately long and wide, like I did.
I would have gone for a more daring design but this was taken from a small tree so it had a pretty high crown, and it was my first time with Sass. I've got a large Sass tree that I'll probably get a bunch of ELBs and other bows from in the future.
If I sold a self bow It'd be like $200 to $300. With all the time invested, If I charged much less, well, lets just say I'd make more per hour polishing shoes.
I've got a bunch of semi processed Hickory that I'll sell you. Just let me know.