these sets have gone by several names over the last few years..most recently "Buddy-L"..
they are quite "low end", although the loco mechanism *might* be based on Bachmann parts..I dont think that was ever confirmed though.
I too have been seeing these locos on Ebay and they look pretty good. The going rate seems to be 35-50 $ I recently bought one and will have to let you know how it goes when I receive it later this week. The store that is offering them even states in the description that the sound is very good for a low cost engine but the smoke unit is lousy and you should consider yourself lucky if you get one that works. Of course the price attracted me to take a nibble but the looks of the engine caused me to bite. If it only will haul a few cars that is fine with me plus I plan on making it somewhat of a project and add a few items to it. something I wouldn't want to do on a more expensive engine.
Have one...would NEVER buy another, even for bashing fodder. Mechanism is a copy of the LGB Mogul drive (not exact) done with poorer quality plastic. Plastic cracks, smoker burns out FAST, sound goes bad. If they'd done this one right, they would have had a real winner on their hands...but they didn't.
Save your money for a recent Bachmann ten-wheeler, a fantastic deal by comparison.
Just my opinion.
PS. Here's a bash I did of one of these when it first came out and the cracks hadn't started in the drive unit. It'll give you a little idea of what these locos are like.
hello Navytech here is my 2 cents worth.
Well I got mine and..... it's like Dan Pierce said "you get what you pay for" The engine looks great and the tender is decent with metal wheels but when I put it on the track and ran it there was alot of sway and it had trouble hauling one car up a 2% grade but I need to test that again since there was a slight drizzle falling and the track was a little slippery I think.
The tender looked to be a copy of a bachmann one and actually has a good sound system built in but... there is a bell and whistle sound that goes off when it wants to and cannot be shut off or triggered. The sway I think is due to the wheel offsets I don't know if it can be adjusted.
I paid $50 for mine plus shipping and wouldn't have paid anymore. I wouldn't buy another. I still plan on bashing this one up in the future. These engines are very similar in appearance and size to a bachmann so if I were you I think I would save up for one of those. Hope this helps.