All above is accurate. Ecotech stuff does go on sale usually once a year, for a very short time spam and it's not everything. The problem with the times when you see some really good deal on the MAP priced manufacturers items from places that aren't BRS or Marine Depot is that it is someone getting an account with Ecotech or another and purchasing store use fixtures then selling them off. The problem that you as the buyer will run into with these shady dealings is that you won't have any warranty coverage, because it was not a retail serial number. Working in the industry unfortunately I have witnessed this more than I would like to. If it is MAP priced and you see it below that other than direct from one of the major players in the industry you should see red flags.