I just bought a mag7 and i think it was give or take around $75 bucks. Not as cheap as some stuff but when it comes to needing flow in my tank, well, I bought it before the old pump expired so at least I wasn't in an emergency situation.
i'd been wanting one for a while so i could have a spare pump on hand just in case i did need one and the old one is a junky ebay no brand type.
Sorry I can't be of more help but I just wanted to say that if you can afford to have an extra return on hand it comes in handy for those middle of the night emergencies.. they'll happen eventually hah just gotta be prepared.
Good ole murphey's law.