Logic Pro is a professional DAW as I'm sure you are aware given your years with it. If you can't afford the $199 upgrade, you should probably just use Garageband for free. Personally I prefer this pricing strategy over requiring a monthly subscription. And $199 is far cheaper than the alternatives.
I agree- however, if you follow what other DAW upgrades cost(and I agree, forget this monthly subscription crap)
Studio One Upgrade from 2-3(highest version) - 149
Reason 8 upgrade from any version - 129(sometimes 99)
Cubase 8 upgrade - 75
Logic is pretty expensive to upgrade for what usually amounts to a free plugin or two and minor functionality increases...