Amazon MWS - list an existing Amazon product with own pricing

Hello, I resell products from suppliers in various locations, including Amazon. A large proportion of the product base is already listed on Amazon, either by the suppliers themselves or other resellers. There is already code in place to search for these products and retrieve the ASIN assigned to each product. I'm looking for someone who has experience with Amazon MWS, to provide some working code to add products by ASIN with my own pricing. I believe (from research) this can take up to four API calls to MWS. The products will be added on the UK version of the Amazon Marketplace, and I should be able to specify at least the price I'm going to be selling the product for and any shipping-related information. There will be no access to MWS keys provided, but I will be able to test the code to confirm it works. I don't need any framework code - just the required XML and cURL code to list existing Marketplace products using my own Amazon account. This is a very quick job for the right person (hence the low budget) so any unnecessarily high bids will be rejected (I have done work with MWS myself so I know that an experienced MWS developer will have this done in no time - and probably already have that code! I simply have too many things to complete and not enough hours! :-) ).