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I agree with Prouddad_1. Also you will need to have an X-ray taken to
see if all the pins/balls are truly connected. This saves you time in
debug , a trip back to that company, and possibly a chip that
might blow if a VCC or Ground is not connected or shorted.
It cost my old company ~$50 USD for up to 3 on one run.
The sniper is easy to use/easy to learn. Pricey if you're only doing a few chips and not justifiable. We needed it for ic development, so it was a necessity. We also managed to use ours for a makeshift temp test station.
OK industries also makes bga soldering equipment but I don't have much experience with thier equipment.