What is a reasonable price for Botox?

These days, it seems like there isn't a single friend around me who doesn't get Botox. To be honest, I have horizontal wrinkles between my eyebrows and a slightly square jaw, so I've always wanted to get Botox. I've had a lot of skin treatments, but for some reason, I just don't feel like getting Botox.

So I started looking into prices lately, and I noticed the price range for Botox in the same area is quite a bit wider than I thought. Xeomin seems to be the most expensive, and I see that Coretox is a popular choice among the domestic brands... What price range should I look for to get Botox? Would it be better to go with a slightly more expensive product to avoid developing resistance?

Also, if anyone has had Botox at Maypure, please recommend a branch in Seoul that was particularly skilled!