I wouldn't get anything under 3 inches, unless it is a 2 3/4 or 2 7/8 inch knit in silk or wool.
You said $25 mint for it.....that is $25 that you don't have to put towards a tie of sensible width.
How wide are your laples that you will be paring the tie with, for the most part?
Personally I only own one wool in solid navy blue, it is 3 inches and from Lands End Canvas. I scored it for $4.00. It works with nearly everything because of the color, and I don't have much outside the 3-3.25 inch lapel width. I would have a look on their site and in their overstocks section before getting anything from JCrew. JCrew has some ok stuff, but Lands End and especially Lands End Canvas is better made, IMO, and more sensible in their widths (lapels and ties). They also have a Nordstrom/Brooks Bros type of return policy, where anything can go back at any time.