Hi there,
Greetings of the day!
I'll really appreciate if we could discuss in detail about this project before offering you a quotation and timeline for the same.
I could bid a blind cost but it'll just create a time gap with long discussion and will give a wrong message in terms of business relationship.
Let's connect over chat and discuss about the project scope in detail with which I can offer you a best quote.
Looking forward to hear from you soon!
Regards,
Rajeeeb