Yeah, used is almost always the way to go no doubt. You just need to make sure you know what you're getting - not something everybody with minimal/no cycling experience is comfortable with. Also, during COVID people started wanting msrp for their old 2017 bike, which I hope has come back to reality since lol
for getting your feet wet in cycling, given the risk-free* purchase from costco, I will not change my opinion that the SR1 is among the best choice for a budget-conscience beginner.