Depends on the turntable you are purchasing.
If you are buying a dj oriented turntable, it has a universal headshell, so installing a cartridge should not be a big deal. The adjustments are also pretty straightforward.
Any of the entry level audiophile tables from Pro-ject or Rega or Music Hall usually come with an installed cartridge and are factory adjusted.
It is when you start cartridge swapping or dealing with more intricate arms and cartridges, that having the dealer do the adjustment is worth it.
Rich
If you are buying a dj oriented turntable, it has a universal headshell, so installing a cartridge should not be a big deal. The adjustments are also pretty straightforward.
Any of the entry level audiophile tables from Pro-ject or Rega or Music Hall usually come with an installed cartridge and are factory adjusted.
It is when you start cartridge swapping or dealing with more intricate arms and cartridges, that having the dealer do the adjustment is worth it.
Rich