It is quite possible to find deals on protein shakes, but it has gotten more expensive over the past few years.
I would recommend staying away from GNC though. Their prices are insane.
As for the free weights/bands difference. You will probably get similar results, but the free weights work the stabilizer muscles more. If anyone has done any squatting before, you would know the difference I'm talking about.
Squatting in a cage, versus squatting with a smith machine, the difference is insane.
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