Converting from R12 to R134a

[David.Ullrich at ferguson.com]

In a previous e-mail I asked about recharging my AC. Well, I've been think about having it converted to R134a. My local independent mechanic says he can do it for around $500, including all parts and labor. I'm not a great mechanic myself, so anything of this magnitude I'd let him do. So, is $500 reasonable to a conversion to 134a? Anyone done it to their Audi? Anyone done it to their Coupe GT?  How well does it cool now? I know 134a isn't as efficient but does it still cool decently? Anyone BTDT?
 
TIA,
 
Dave 

1987.5 Audi Coupe GT "Special Build" 2.3 - Anthracite Black 
1998 VW Passat GLS 1.8T - For Sale CHEAP 

 

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