Personalize one really depends on you yourself.
Let me give you an example how much you should charge!
Don't listen to those people who gives you exact quotes telling you " THIS IS THE BEST PRICE GUARANTEE CUSTOMER GONNA FLOCK YOU ".
Most of the time you'll get over worked when its too cheap and you'll get no clients when its too expensive.
Research on how to charge your client on google but never go by hourly rates, trust me my friend
STEPS TO FUCKING SUCCESS!
1. If you've no client proceed to step 2 - THIS IS TO TEACH YOU HOW TO HANDLE CLIENTS.
First ask your client what do they want in their infographics then let them know you'll take this amount of hours and and you'll need to research to really personalize it for them, and yes they have to pay you while you research. Tell them this is not some form of game going on the internet and playing hide and seek its really to go out there to make sure their infographics is ON FLEEK!
Its like you're a specialist in a area of graphic designs. Most graphic designs do everything that why their value will never be high because they are jacks of all trade master of none.
2. You need to know yourself, try doing a project yourself for a already existed company.
Time yourself and see how long will you take to do a project, roughly gauge how good are you at what you're doing.
3. Ask yourself do how much do you think you're worth hourly, for starting out 40-60$ per hour is good. Since you're doing only a specific DESIGN GROUP which is only specialize in infographics
YOU SHOULD CHARGE WAY HIGHER THAN THE PRICE I GAVE YOU, why ? Because you're specialize, you don't go to a fucking doctor and say give me painkiller you go to the dentist!
4. NOW, Always give yourself 2-3 hours to research and brainstorm and yes you have to charge this to your client.
5. NOW DO YOUR MATH.
For example:
You take 4 Hours to do a project and 2 hour of research and revision depending on how many times the client wants.
So it will be 80$ x 6 + 80$ = 560$.
NO SHITTING YOU, this is what you should charge depending on how much you think you're worth and make sure you explain to your clients what they are getting.
And also you can always tell them first client promotion is always 30% off, if they like your design they'll probably continue working with you trust me.
PRICE IS NO EVERYTHING.