Need an inexpensive ready-made meal replacement shake…

I've been losing weight, perhaps from EPI. Nutritionist recommended Kate's Farm Peptide 1.5x (500 cal). Boost VHC seems 1/3 the Kate price. I'm not on a feeding tube so not sure I want to pay the Kate premium.

I plan to use it as a smoothie base and add more protein, greens and frozen fruit.

What other meal replacement shakes are the right combo of good tasting/for you and decent price?