If the charger is at all capable, it will charge a Lipo in a little over an hour, usually under 1:30. That's a 1C charge. Some of the newer, costlier batteries can take a 3C-5C charge, which will get your charge time down to 15-20 minutes.
If your battery will only take a 1C charge, as most do, a $200 charger won't make any difference in the time it takes to charge. Your best bet is to buy 4 or 5 batteries and maybe a charger that can do two simultaneously. I use a Polycharge 4 by Electrifly, does 4 at once, about $100 5 yrs ago.