Is this nose bridge height achievable? Cost estimate? (Photos)

Hello and thank you for your question. Based on your
photograph, you may benefit from dorsal augmentation of your nasal radix.  I prefer to use diced cartilage wrapped in fascia. Cost varies based on geographic region and surgeon expertise.  Make sure you specifically look at before and after
pictures of real patients who have had this surgery performed by your surgeon
and not just a computer animation system. The most important
aspect is to find a surgeon you are comfortable with. I recommend that you seek
consultation with a qualified board-certified plastic surgeon who can evaluate
you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

Thanks for your question! It looks like you did a great job adding a little height to your nasal dorsum. Without a detailed examination in the office, it's tough to tell exactly, but adding height is very achievable and can be done through many different ways. 
As far as cost, this will depend where in the country and who you go with. Realself can provide some good insight into this. 
hope this helps and God Bless!
Dr. Robb