Any experienced, good Tattoo Practitioner considers these factors and a bunch of other key details before giving you recommendations on designs or giving you a quote. Keep in mind stuff like your skin tone, aesthetics of placement, pre-existing tattoos nearby, skin condition, skin damage (for cover-ups) etc are not at all clearly understandable from photographs.

Also, most of the time people change ideas, improvise and do a lot of editing/fine-tuning based on trial and error before finalizing a tattoo concept. And that’s exactly why most artists who does concept development prefers meeting clients in person for discussion (Your’s truly me too, comes in this category)

Cost of a Tattoo – This varies by artist and studio, but is mostly chargeable based on the size of your tattoo, how much effort and time your tattoo artist is investing for your piece.

Artist – End of the day your artists skills determine the gap between what you’re promised and what you carry on your skin for the rest of your life. If you want a tattoo that stands out and make an impression, this is where you personally have to spend some effort on. Do your own research and pick an artist you have seen healed works of, and trust.

When you have researched an artist’s previous works, liked them and want to get tattooed from them, schedule a discussion session in person first. Be upfront about your expectations and show them stuff you liked. Let them come up with recommendations based on their understanding, before making the final decision.
If you’ve read so far, I will give you the most important tip. 

*Discuss your budget with your artist especially if you’re on a tight budget and ask them what they can do for your project. With any artist who loves their work, most chances are this will get you much better deals than looking for bargains.