Yeah, that sort of thing's good for early leveling. Just have to remind folks trying it that it doesn't effect
training, and after a bit (iirc it's usually fairly easy to use-train skills up to five or six... maybe 7 or 8 if you start with it high?) paying for skill XP is so massively more efficient (particularly in the face of sewer runs

) that type of consideration is mostly pointless :V
... but yeah, mid-late game powering up, if you're trying to be quick about it, basically consists of doing sewer runs and then blowing all the (millions of) dosh on skills. You don't bother with buying almost anything mech related at that point (and you won't be buying anything except consumables for SF:0, either, as it usually takes the best you can buy in-shop just to do the runs) -- if you need or want a part, you take your cash-infused piloting skills and go headshot whatever it is you're after. Every penny piles into the skills (and repairing stuff, I guess).
Can ramp it up, too. If you can do a 100k+ run, it's pretty easy to use that to start bootstrapping skills and pull yourself up to the point you're managing the 2-3 million plus runs.