Recommendation has been made to create a sticky for weightlifting equipment since this topic pops up frequently and the workout thread moves fast. For general weightlifting equipment:
ironwoodyfitness.com For the 'wei-rui warrior weightlifting shoe' that has been vouched for by sid vicious, here are a few links to online stores that sell these:
quest-nutrition.com Singlets http://www.innerstrengthproducts.ca/.../matmansinglet
I will be adding to this list as suggestions are made, and feel free to PM me if there is a link you would like to be put up on this thread.