Drupal/Ubercart: shipping quote and taxonomy search

Hi everyone! My project is urgent! I have a limited budget for this project (200$ USD) and a quick deadline (7-10 days) as a developer here doesn't finish the work. So I'm in late on this project. So I need someone FREE. Someone who will not tell me after a while that he has too many work and can't finish mine. I'm about to launch the website so please consider this. I need to test the work before. Shipping: For now only admin can configure Flat rates that will be shown and fulfill on product creation form (and then display on checkout). What I need is: - Sellers to be able to add, edit and remove their own flat rates. So the buyer will choose his shipping method by seller/product. - There is a big lack into marketplace and shipping module: seller's dont own shipping charges for their orders!!! So I need to allocate shipping charges to sellers. They will see it in their report pages and as I use, Paypal Masspay to pay them (their orders revenues minus my commission) I want to add also shipping charges to their revenues. Taxonomy search: - make taxonomy as faceted search in the product catalog so buyers can select to multi terms (per vocabulary: designer, category, color, materials) to find products. It's like [login to view URL] (left sidebar). For now in Drupal, it's possible to do that with faceted search or apache solr module but they are too complex. Then, I will need again other works for another website (better budget and deadline). So I need also someone for a long term. Thank you! Have a nice day!