Nick, glad you're coming out to snow-filled Summit County and vicinity.
If you're looking for other Bears to ski with for fun, I'm sure you can get together with some - especially if you post in the Meet-On-The-Hill forum. Unfortunately I won't be one of them since I'm laid up with an injury, but otherwise I'd love to get in some turns with a fellow Bear. There are all sorts of informal ski meet-ups going on - check the posts there or start your own. Among those might be some instructors who would enjoy free-skiing with other forum members. Note the "free-skiing".
If you're looking for instructor recommendation for a group or private lesson, there are lots of instructors here who work at the resorts you mention or who know and can recommend instructors. I don't want to leave anybody out by mentioning just a few, but in addition to Lisamarie's mention of Jonathan, Jan Degerberg
, Billy Nowell, Mike Shimp are among the great instructors who do private lessons at Breck. There are whole bunches more. Bob Barnes who often posts here is training director over at Keystone and he might be able to recommend folks there. Note that for group instruction, you typically cannot request a particular instructor unless you've previously taken a lesson from her or him before.
If you're looking for free ski instruction - please understand that this is a full-time job for many of our instructors here, a part-time job for others who are still committed to the profession, and all spend lots of hard-earned cash to take clinics, keep up with modern equipment, and otherwise prepare to give a guest the best possible lesson. IMHO it's not fair to ask a professional instructor whom you've never met and don't have an existing friendship with
, to give free tips and instruction on the hill. In fact it could be considered a violation of the instructor's employment agreement.
Note that is totally different from free-skiing with an existing friend who happens to be an instructor, and maybe getting a few pointers while you're out there having fun. Instructors love to ski - that's why we all do it regardless of our experience, and love sharing that joy with others. But it is a profession, and the people doing it deserve to be paid for their professional expertise.
I'm not sure if that's what you were hinting at, and if I read your post incorrectly, my apologies.
That said - welcome again! Now - as to your question about what instruction might cost: Lessons are reasonably affordable at the areas you mentioned, there are multi-day deals with one-full-day and 2 half-day packages for example. Group lessons at Breck are (double check at the desk, it varies by date) around $90 for a full day lesson or $165 for a 3-day option pack with the one full and two half days taken anytime during your vacation.
If you're at similar levels, booking a private lesson may actually get you where you want to be faster. Although the rates are higher, they are per-lesson, not per-person, so the two of you could share a half-day private. The website shows the current price for that at $390. This could be the kind of focused attention you both want. Although it's possible to book a one-hour private, I'd suggest that isn't enough time to really make progress with two people compared to what you could do in a longer session.
But just one or two group lessons at the appropriate level, somewhere during those 5 days, could be just the ticket for tuning up your skills. At the intermediate and upper levels, groups are usually rather small.
Vail and Keystone would have similar deals but I don't know the prices for sure; I would expect Vail to be a few bucks higher.
Thanks for coming out here, and again apologies if I misread your request.