I personally haven't sprung for telephone coaching, but am seeking counsel from my pastor (free) and a marriage counselor ($35/session & covered under insurance as mental health therapy). There are obviously "other" cheaper alternatives to a DB coach, but even still, a DB coach is cheaper than an attorney... My attorney visit cost $250 (for 1 hr initial consultation) and he quickly oted $1500 for separation agreement, which is comparable to others in my town. I shopped around before visiting...
Another option if your sitch goes the route of S or D is to visit a mediator before going to an atty. Mediators are typically therapists and bill as such, much cheaper, and would therefore help you save on atty fees.
UpperCut Me: 28 W: 25 Married: 4 yrs Together: 7 yrs Dday: 9/14 (W ends affair & comes home) S: 12/14 (W restarted affair 1/15; moved near OM 2/15) No kids