As I'm new, I was unable to find anything that generally spoke of what is preferred by providers as a max age difference. I would assume it would depend on the feeling of both parties. Please feel free to chime in and elaborate from here.

hobbyists and providers come in all ages.  There's even a TER 60 and over board. Most providers prefer to see "mature" hobbyists. Not sure where the age for mature starts but if you read escort ads you'll notice many have a minimum age requirement.  My advice, see whoever you're interested in, and don't worry about her age.  

younger gentleman looking for an older woman or vice versa. Age doesn't typically matter if you like what you see, engage in communication and go from there. A connection begins with the first email. I personally am considered a 'mature' provider at 40yo but hate that word lol. Men 20 years younger and 20+ years older have shown interest. It runs the whole gamut truthfully. It is all in the eyes of the beholder and what they are seeking out of their own personal experience in this world.  

anything from -5 to +60 years, lol. Completely depends on the person's demeanor when contacting me. I've been pleasantly surprised before, and so always take things on a case-by-case basis.

forget about it.  It's all about the $$$$$.  If yoiu are clean, treat her with respect, and are otherwise a gentleman, you should have no problem.

I'm 4 months from 60 yrs old. I've seen ladies ranging in age from 22 yrs old to 50 yrs old. How much older I am than they are was never an issue. There are some ladies that won't see guys under 30 or under 40. I've seen an ad that said only gents from 30 to 50 (only one mind you). Very rarely would the age difference be a problem. Choose who you'd like to see. Check her out here on TER. Set it up and have fun.

whether the two of you actually get along. I'm the kind of girl who wants to actually enjoy the company of the people I get into bed with. It happens to be that I generally connect with men who are somewhat older than me. My last personal relationship was with a man 25 years older. So, it seems I tend to go 10+ years older for clientele.  

Well to be honest each provider is different.  It all depends on an individuals preference.  You can only do research, and once you find a provider that you are interested in try find out what their preferences is, if any