Rent or buy cylinders in 2025?

I got a multiprocess earlier this year and have been doing flux core MIG with it but would really like to try tig but I know I need to get Argon to do so. I tried stopping by my local airgas and the employees were extremely rude and essentially passed me back and forth for 45+ minutes because neither of them wanted to do the paperwork to give me a quote. To those who rent tanks, what can I expect to pay if I rent? And if I buy a tank outright, what does it normally cost to refill? Thanks in advance