need ecu for 400-450 efi

[T.Low]

Need Magnetti Marelli IAW 15P fuel injection ecu (yeah, you guys know the one). For an '05 fse 450.

Seems I had a ground come lose so it fed wacky voltage levels to the ecu and fried it. (Bike wouldn't start and then wouldn't talk to the laptop) Took it apart and tried to re soder but to no avail.

GoFasters can have it to me in 3weeks for $625, (i must have been too busy moaning and groaning to ask about shipping cost). My not so local dealer can get it for $675.

As much as i want to support anyone who deals GG, we just had a baby at Thanksgiving and then i got laid off at New Years, so moto budget is taking a big hit.

If i find a used one, then I need to get a new dongle for my tech program. And I would imagine used ecu is a bit of a roll of the dice?

Anyone have a good used one or know of a good alternative?
I've looked at alternatives from Micro Squirt at $475, but it's not a plg n play situation, so I'm not anxious to go that route.

Any and all comments appreciated.