I use an Epson 2200 for my personal printing. I also sometimes order prints from my personal photography website host, Smugmug. Smugmug is more expensive but I have found the quality to be superior to Imagestation and Ofoto (but I have also preferred Ofoto to Imagestation).
The 2200 will run approximately $650 and produces better prints than I can get commercially, mainly because I can control the color calibration "in house" and see immediate results to determine if any "tweaking" is necessary. I have never broken down the per photo cost because it has varied with the different sizes I print as well as alternating black & whites and sepia prints.
I guess the main question I would have for you is what is your level of photographic ability combined with your intended use such as photo size. There is no need to go with a higher end printer such as the 2200 if you are only printing 4x6 photos and you have "average" skills. If you are intending to become proficient in imaging software such as Photoshop, you will never get to appreciate the results if you choose one of the inexpensive alternatives in printers.
You also need to consider whether you want the "hard copies" of your photos to last. Espon printers and epson archival inks, when combined with Epson photo paper, are color fast for approximately 65 years. This is a longer lifespan than you will find with the traditional print services currently available.
Your costs will go up in direct proportion to the quality of your final product. I would recommend Epson printers in general (FYI - I have no relationship with Epson other than as a satisfied consumer) and specifically those that use multiple color ink cartridges. Many lower end printers use one black and one "color" cartridge but the 2200 uses one black and 6 different color cartridges to give a more accurate and richer final print.
I guess a simple answer would be if you plan on printing up every photo you shoot in a particular "session" it is more economical to outsource the task to Imagestation or Ofoto (once again, my preference is for Ofoto - similar pricing but better color control). For best possible image control and quality, it is more "economical" to print them yourself with one of the multi-cartridge Epson printers. Just remember to use only Epson inks and Epson papers for the best and longest lasting results.