Real quick question about pumps

I found some pumps on ebay that look just like my Koralia's. There are (2) 1300 gph pumps for 29.00. Anyone ever seen or heard about these?

2 1300GPH CORAL AQUARIUM FISH PUMP WAVE MAKER POWERHEAD - eBay (item 390093203798 end time Oct-12-09 09:49:08 PDT)

Thanks for any advice..

 

I have one of those, got it in a trade, spend the extra money on the hydors, these are decent and move great amounts of water BUT the suction cups dont stick, i woke up one am to a very cloudy tank bc it fell off.

 

Some of those korallia knock offs do have magnets. I hear that those are actually pretty good then. Suction cups as a sole way of affixing something that moves 300gph or greater is an accident waiting to happen.

 

I have heard good things actually, but they don't seem to last as long as the Koralias. About a year or two with these. Plus if something were to break, good luck finding a replacement part or any type of warranty service
Personally I would stick with the Koralias. There's not a whole lot of money to be saved here when your talking marine hobby expense.