I have a question regarding the price of weight loss injections!

I keep trying to lose weight, but I'm not losing it as well as I expected, so lately I've been considering getting help from weight loss injections. There are many areas where I can't lose weight just by controlling my diet on my own, so I would like to get a consultation first.
I have a few questions. I would like to know the approximate price difference for weight loss injections. I am curious if the cost varies significantly depending on the treatment area or dosage. Also, I would like to hear from those with experience regarding how long it typically takes to see the expected effects after receiving the injections.
It would be a huge help when deciding on the procedure if you could also share information on the recommended number of sessions or treatment cycle. If anyone is knowledgeable about this, please share your advice.