What are the right sentences?

[sweetie_s]

Dear Teacher,

What are the right sentences below? And how can we write a best sentence for the below purpose?

We are pleased to offer our best price for your required gaskets as below/as follows:

We are pleased to quote our best price for your required gaskets as below/as follows:

We are pleased to quote our most competitive price for your required gaskets as below/as follows:

We hereby submit most competitive price for your required gaskets as per the following:

[Tdol]

I like the first best.