Swiss to Asian is one thing for a standard A7750.
Cost for a Swiss 7750 varies between $275 or so for the older 17j ones (which were definitely made in Switzerland) and upwards from $350 for the newer 25j ones.
A watchmaker will charge about $150 or so to do the swap which will involve broaching and gluing hands where necessary.
Servicing for $60 is CHEAP. If that's a complete strip down, cleaning, oiling and rebuilding...that's about 25% of the standard rate!!
The issue like indyberetta mentioned is that the APs have the seconds at 12 mod done to the A7750...and I don't think that adding the mod plate is a straight addition that can be done to a Swiss movement...so your only option is likely servicing. I'm not sure on this...but I haven't seen this being done before from what I remember.