I operate a business online and I sell a product which many other companies also sell. However, the price that I sell the product at is much lower than most other companies because they have a very high profit percentage. If I was to, say, go on their Facebook page and post something like "buy it from (my site), it's way cheaper than (competitor)!", is that considered unfair competition or is there a law against such actions? I've tried looking around but I can only find things such as "misleading advertising". :/