Several product description needed

Num. of words: 75 to 125
Industry: Art and Design
Topic: product descriptions for jewellery, greeting cards and paper bouquets
Tone: Sincere
Outline & Structure: I'm looking to improve the product descriptions on my website. I sell handmade origami jewellery, greeting cards and soon will add paper bouquets.

I'll need:
-Meta tag description (around 150 characters)
-meta tag keywords
-Product description (around 75/125 words)

At the moment I have about 15/20 different products available. Each have from 1 to 10 variations (mostly colour variation). The descriptions need to be different so that there's no duplicate content as that affects ranking results.

7 products with 10 variations each
5 products with 5 variations each
5 products with no variations

So in total it would come to about 7500/12500 words

The copy must be written in British English, clear and include SEO keywords.
If I'm happy with your copy there will be more jobs to come once more products are added.

VERY IMPORTANT:
Please give me a proposal based on cost per product description + cost of variation as budget is limited.

Any proposal not complying with the brief provided will be refused and ignored. If you have questions just ask.

Please provide examples of previous copy (preferably product descriptions)
Extensive research needed: no
Extra notes: I would like for this job to be done until mid october.

Send your proposals until 11.59pm 23rd September. A decision will be made by 26th of September.

If you want to see the kind of product you'll be working with please visit www.theorigamiboutique.com