I noticed Best buy is carrying some pretty neat RC construction 1/14 models made by a Canadian company called Litehawk. Rule of thumb you get what you pay for but they look like they could handle some light material.
Front end loader
http://www.bestbuy.ca/en-CA/product/...d4911f6ba0en02
Dump Truck
http://www.bestbuy.ca/en-CA/product/...65841fa5a0en02
http://youtu.be/eL6WfWeqQCA