Marketing writing

I need a help in creating 6 marketing purpose texts:
1. webpage text (description of services) -- around 150 words
2. letter (email) accompanying cold calling -- around 150 words
3. letter (email) describing my services as a freelancer -- around 150 words
4. letter (email) describing my services as a company -- around 150 words
5. marketing postcard text -- around 50 words
6. linked in promotional marketing email. -- around 150 words
I can provide with base texts which can be used as a staring point for something more sophisticated.
Please provide me with with your proposed fixed fee for the whole job and approximate time which is needed for completion.