We need to customize django-oscar e-commerce, together with add-ins mentioned in the title. System works on AWS with postgis database.
6 freelancers are bidding on average zł1527 for this job
I have done 3 complex django sites, only one of which is public, at http://casino.gcoin.us. I haven't used Google App Engine, but I'm glad to learn it, and I've discounted my bid since I'm not an expert.