Hi, I have wast experience in Ontology Engineering and semantic web technologies. I have extensively worked with Protege framework to create ontologies. Also, I have published research paper on modeling Domain Ontologies and creating semantic framework using SNOMED CT ontology.
I can assure you that I will be able to develop this ontology using Protege. However, I will be able to precisely tell you about the project completion time and amount only after knowing the project in detail.
Protege is an excellent tool as it adheres to the standards of W3C.
Look forward to hearing from you soon.
Regards,
Abhinav