We've all been there (I think). At the expense of sounding sexist, the SVX is like a "high maintenance" wife. She likes the diamonds and pearls -- even the expensive underwear (things that people don't see). She simply likes the "finer things" and all the finer things (big and small) are more expensive. Sure, you can buy her a "purse" anywhere, but, she prefers a Coach Leather purse and will take nothing less.
On the other hand, you could dump her and save money on a girlfriend who's satisfied with a sixer and a round of 8-ball and loves to shop at the Goodwill and Wal-Mart.
Yeah, there's a "what am I willing to tolerate" factor, but, that's up to you to decide. Personally, I'm not a wealthy man. I've already spend half as much again on my car as I bought it for. If I were using the amount of money I spent as a barometer as to whether I'd keep the car or not, I'd have ditched it a long time ago. I base my "tolerance" factor on how the car makes me feel, how it performs when it IS operating and how much I stare at it when I'm standing on my front porch. I'm gonna keep her for a long time. But then, that's just me.