Deep Etching (Background removal) of product images using Photoshop

We need deep etching (background removal) of a total of 57 product images and sent back to us in the Photoshop working file that you used and also a .png version of all images ready for us to use in advertising. Photoshop working file - This process need to be completed by tracing around the images in Photoshop and deleting the background. We need this to be done accurately and in detail, no sloppy work. Please see the 3 attached images 1 - The original file (similar to the ones that will be sent to you) 2 - The finished .png file 3 - The test file - To be considered for this job please perform the deep etching of this image in Photoshop and attach with your proposal. All proposals that have not sent back the Photoshop test file will be ignored. This is an urgent job and we need to get someone working on it ASAP and don't want to waste our time with anyone who cannot do the job exactly as we have asked. We are using Photoshop CS5. The first person to send us back the test file, quote us a cheap price and can promise us back the images back within 24 hours will win this job. 32 images are ready to be sent now and another 25 will be sent over the next few hours. Thank you.