Here's my Squier VM 70's Jazz.
I've changed bridge to a Fender Hi mass Dlx (OEM on Blacktop basses), changed knobs to genuine Fender Jazz, added thumb-rest and upgraded electronics to a CTS 250K solid pots, orange drop cap and switchcraft jack.
Also I will upgrade pickups to a AVRI 75 Jazz pickups (ordered) and that's it for this transformation.
These upgrades have cost me 210$, added this to 415$ paid for the bass, total cost is 625$. Now yes I know that this seems too much for a Squier VM 70's Jazz but in Europe they cost in between 320 and 360 Euros (350 to 390$ depending on a color) and in my country a few bucks more.
But a MIM Standard Jazz costs from 850$ (gear4music) to 870$ (thomann.de), and basically you get 40$ pickups, 25$ brigde, 30$ tuners, so it's not better than a Squer VM od CV, maybe a bit more consistent quality control but costs 2x more.
To get a MIM Jazz with block inlays you have to pay 1015$ to 1040$ for a Classic 70's Jazz
CHEERS..