A shipping calculator for Spree that calculates shipping costs based on weight buckets. Ranges of package weights are assigned a price and the shipping cost worked out based on the total weight of the products in the cart.
Add this line to your Gemfile:
gem "spree_weight_bucket", :git => "git@github.com:terje/spree-weight-bucket.git"
Be sure to bundle your dependencies and then create a dummy test app for the specs to run against.
$ bundle
$ bundle exec rake test app
$ bundle exec rspec spec
Copyright (c) 2012 Terje Tjervaag, released under the New BSD License