So - did you go for it? If you did, how are you getting on?
I grew up with crt monitors, and printed loads. The only calibration I did was by using the free Adobe Gamma app. Prints were fine.
I'm ignorant of Macbooks, but flat panel monitors generally come from the factory with a default brightness that's over the top for photographic work. You have to turn them down to something like 40 - 50%. Thereafter, you might try to tune the brightness more exactly to reconcile it with print returns. But here comes the next conundrum - how a print appears to the eye varies hugely according to the light it's viewed by.
So print-viewing conditions are as subject to test every bit as much as monitor settings.
There are free ways to get colour balance on screen pretty well right without too much fuss, and which will relate onwards to print procedures. But printing can be a minefield as many posts on here will confirm. With home printing, there could be a contest between image-processing app and printer driver, and the print settings in each.
My message essentially is that shelling out for a device isn't necessarily going to be the magic bullet you might want it to be. With or without it, to get a result, you have to put a bit of leg-work in. So I'd try some leg work first, before you spend needlessly (on yet another thing that will have mined resources, made other people rich(er), and added ultimately to the great landfill mountain, as well as possibly confusing you more than before).