A roofer probably has a number "per square" that they are pricing at, so imo yes, its enough to get a ballpark conversation started. But asking for a "quote" like a number you can expect to hold that contractor to is a different story.
At minimum you'd need to figure out what roofing product is going to be used for new. The 2:12 screams problems to me if shingles are involved, a heavy dose of ice+water would be on my radar screen.
There are many details to be hashed out: what kind of strip and prep is happening, what kind of underlayment, drip edge, ridge vents to be added, valleys, any penetrations, etc, etc, etc. Not saying that a homeowner needs to have knowledge of absolutely all of them but some discussion should take place about what is all included and where in the good-better-best-spectrum the materials & details will fall.